World Data Center A consists of the Coordination Office and eight subcenters:
**World Data Center A**
Coordination Office
National Academy of Sciences
2101 Constitution Avenue, N.W.
Washington, D.C., U.S.A. 20418
Telephone (202) 961-1478
**Solar and Interplanetary Phenomena, Ionospheric Phenomena, Flare-Associated Events, Geomagnetic Variations, Magnetospheric and Interplanetary Magnetic Phenomena, Aurora, Cosmic Rays, Airglow:**
World Data Center A
for Solar-Terrestrial Physics
National Oceanic and Atmospheric Administration
Boulder, Colorado, U.S.A. 80302
Telephone (303) 499-1000 Ext. 6467
**Meteorology (and Nuclear Radiation):**
World Data Center A:
Meteorology
National Climatic Center
Federal Building
Asheville, North Carolina, U.S.A. 28801
Telephone (704) 254-0961
**Oceanography:**
World Data Center A:
Oceanography
National Oceanic and Atmospheric Administration
Rockville, Maryland, U.S.A. 20852
Telephone (202) 426-9052
**Rockets and Satellites:**
World Data Center A:
Rockets and Satellites
Goddard Space Flight Center
Code 601
Greenbelt, Maryland, U.S.A. 20771
Telephone (301) 982-6695
**Tsunami:**
World Data Center A:
Tsunami
National Oceanic and Atmospheric Administration
P.O. Box 3887
Honolulu, Hawaii, U.S.A. 96812
Telephone (808) 546-5698
**Glaciology:**
World Data Center A:
Glaciology
U.S. Geological Survey
1305 Tacoma Avenue South
Tacoma, Washington, U.S.A. 98402
Telephone (206) 383-2861 Ext. 318
**Longitude and Latitude:**
World Data Center A:
Longitude and Latitude
U.S. Naval Observatory
Washington, D.C., U.S.A. 20390
Telephone (202) 698-8422
---
Notes:
(1) World Data Centers conduct international exchange of geophysical observations in accordance with the principles set forth by the International Council of Scientific Unions. WDC-A is established in the United States under the auspices of the National Academy of Sciences.
(2) Communications regarding data interchange matters in general and World Data Center A as a whole should be addressed to: World Data Center A, Coordination Office (see address above).
(3) Inquiries and communications concerning data in specific disciplines should be addressed to the appropriate subcenter listed above.
FOREWORD
This report was initiated by the Supplemental Call for Papers in the Solar-Planetary Relationships Section at the Fall Annual Meeting of the American Geophysical Union at San Francisco, California, December 4-7, 1972. Furthermore at the XVII General Assembly of the International Union of Radio Science (URSI), Warsaw, Poland, August 20-29, 1972, Commission III passed Recommendation III.5 which designated July 26 - August 14, 1972, as a Retrospective World Interval. Finally, Commission V of the International Association of Geomagnetism and Aeronomy (IAGA) is scheduling a Symposium on this time period as well as at the September 1973 meeting of IAGA in Kyoto, Japan.
# TABLE OF CONTENTS
| Section | Page |
|------------------------------------------------------------------------|------|
| FOREWORD | i |
| INTRODUCTION | 1 |
| SOLAR AND INTERPLANETARY DATA | |
| Solar Indices (July 26 - August 14, 1972) | 3 |
| Rz | |
| RA' | |
| 2800 MHz Solar Flux | |
| Solar Flux adjusted to 1 AU | |
| 15400 MHz 2800 MHz 606 MHz | |
| 8800 2695 410 | |
| 4995 1415 245 | |
| Maps (July 26 - August 14, 1972) | 4 |
| X-rays (OSO-5, University of Leicester) | |
| 8.6 mm (Prospect Hill) | |
| Magnetograms (Mt. Wilson) | |
| 9.1 cm (Stanford) | |
| 21 cm (Fleurs) | |
| Calcium Plages (McMath-Hulbert and Catania) | |
| Hα (Boulder and Ramey AFB) | |
| Sunspots (Boulder) | |
| Coronal λ 5303 (Kislovodsk, Norikura, Pic-du-Midi, Lomnicky Stit) | |
| White-light Corona (OSO-7, NRL) | |
| FeXV, 284A (OSO-7, NASA, GSFC) | |
| Calcium Plage and Sunspot Data for McMath Region 11976, July 28 - August 11, 1972 | 44 |
| Coronal Emission λ 5303 West Limb Passage of McMath Region 11976, August 5-14, 1972 | 45 |
| Radio Interferometric Observations (Nançay) | 46 |
| 169 MHz (July 25 - August 20, 1972) | |
| Radio East-West Scans | |
| 10.7 cm (Algonquin) July 25 - August 16, 1972 | 47 |
| 21 cm (Fleurs) July 25 - August 16, 1972 | 48 |
| 43 cm (Fleurs) July 25 - August 16, 1972 | 49 |
| Pioneer VI July 26 - August 14, 1972 | 50 |
| Solar Wind | |
| Cosmic Ray Protons | |
| Pioneer IX July 26 - August 14, 1972 | 51 |
| Solar Wind | |
| Interplanetary Electric Field | |
| Interplanetary Magnetic Field | |
| Cosmic Ray Protons | |
| SOLAR FLARE ASSOCIATED EVENTS | |
| Hα Spectroheliogram of Flare at Boulder 1526 UT, August 7, 1972 | 53 |
| Flare Data (July 26 - August 14, 1972) | 54 |
| Surges and Active Prominence Regions (July 26 - August 14, 1972) | 64 |
| Radio Events (Fixed Frequency) (July 26 - August 14, 1972) | 65 |
| Selected Bursts August 2, 4 and 7, 1972 | 80 |
| Radio Spectral Events (July 26 - August 14, 1972) | 83 |
| X-rays (SOLRAD 9 - Explorer 37) July 26-31, 1972 | |
| (SOLRAD 10 - Explorer 44) August 1-31, 1972 | |
| 1-8A Hourly Averages | 94 |
| 8-20A Hourly Averages | 96 |
| Outstanding Events | 98 |
| Sudden Ionospheric Disturbances (July 26-August 14, 1972) | 100 |
| Protons | |
| Near Earth | |
| Hourly values (ATS-1) 5-21 MeV | 101 |
| 21-70 MeV | 102 |
| RIOMETER DATA | |
| Alaskan Stations July 27 - August 14, 1972 | 103 |
| (Ft. Yukon, College, Paxon, Sheep Mt., Anchorage) | |
| McMurdo August 4-10, 1972 | 110 |
| Section | Page |
|---------------------------------|------|
| IONOSPHERIC DATA | |
| f-plots July 26 - August 14, 1972 | 111 |
| Thule, Godhavn, Narssarssuaq, Churchill, St. John's, Wallops Island, Mexico City, Maui | |
| COSMIC RAYS | |
| Indices July and August 1972 | 114 |
| Graphs of Hourly Totals July and August 1972 | 116 |
| GEOMAGNETIC ACTIVITY | |
| Kp, Ci, Cp, Ap July 26 - August 14, 1972 | 118 |
| Principal Magnetic Storms July 26 - August 14, 1972 | 120 |
| Sudden Storm Commencements July 26 - August 14, 1972 | 121 |
| Reduced Magnetograms August 4-10, 1972 | 122 |
| Leirvogur, College, San Juan, Honolulu | |
| Dst | 126 |
| AURORAL ACTIVITY | |
| Visual Observations August 4-6, 1972 | 128 |
INTRODUCTION
by
J. Virginia Lincoln and Hope I. Leighton
World Data Center A for Solar-Terrestrial Physics
Environmental Data Service
National Oceanic and Atmospheric Administration
Boulder, Colorado 80302
In this report are presented the solar-terrestrial physics data available in early October 1972 for the period of unusual solar activity July 26 - August 14, 1972, associated with the transit of McMath Plage Region 11976. Much of the data has appeared or will appear in the monthly "Solar-Geophysical Data" reports. Because of the promptness of this report some of the data will be more complete at the time of the Comprehensive Reports, January through March 1973 issues, of "Solar-Geophysical Data".
The advantage of this report is that the data are collected in one place rather than distributed through several issues. In addition, data not routinely published are included. The data come from worldwide sources and are part of the archives of World Data Center A for Solar-Terrestrial Physics.
Since this period is of such interest containing the greatest geomagnetic storm to date of the current solar cycle, together with many associated terrestrial effects, we plan to issue at a later date a special catalog of all the data for this period submitted to the World Data Center. We also plan to request contributions for a more complete data compilation from the worldwide community including interpretations of their data. This too will be a UAG-Report in this series and will be planned for distribution before the September 1973 Kyoto meeting of IAGA.
This data compilation is ordered roughly as is "Solar-Geophysical Data". Most of the data are self-explanatory, but for more details as to interpretation, instrumentation used, etc., reference should be made to the "Solar-Geophysical Data" Descriptive Text, No. 330 (Supplement), issued February 1972.
The daily solar maps are as indicated in the Descriptive Text with the FeXV maps described in "Solar-Geophysical Data" No. 335, Part I, Prompt Reports, July 1972. They are from the Goddard EUV Spectroheliograph on OSO-7 recording radiation from a small element of the solar disk at extreme ultraviolet wavelengths between 120A and 400A.
A table presents the $\lambda$ 5303 green coronal line intensities associated with the west limb passage of McMath Region 11976. There were insufficient data to prepare a similar table of east limb data.
Though all of the solar flare data which will eventually be received are not available at this time, it was considered worthwhile to prepare a preliminary listing of confirmed grouped flare reports. In the margin the flares of importance 2B or greater are highlighted. They occurred at 1958 UT August 2, at 0530 UT August 4, at 1455 UT August 7 and at 1227 UT August 11, 1972.
From the archives of the World Data Center a table of the outstanding surge and prominence reports was prepared from the data available.
The most outstanding solar radio emission bursts for fixed frequency have been highlighted in the margin in a manner similar to the flares. These are at 0305 UT August 2, at 1946 UT August 2, at 0540 UT August 4, at 1425 UT August 7, and at 1208 UT August 11, 1972. As with the flares, there will be further reports available later. The graphs of several selected bursts on August 2, 4 and 7, 1972 are presented.
The ATS-1 proton data are the only satellite data reduced in time for this publication. They are believed to be subject to large error for two reasons: 1) sensor degradation and 2) an overflow of registers used to display the fluxes in the Boulder Warning Center.
The proton events and geomagnetic disturbances are evident in the riometer records reproduced from the Alaskan chain of riometers. Caution should be exercised in their interpretation since the equipment was not operating in such a manner as to make it possible to prepare a reliable quiet day curve against which the raw riometer data could be compared.
The McMurdo riometer data are thanks to W. I. Axford and H.J.A. Chivers of the University of California, San Diego. The McMurdo instrument transmits the data via satellite to California where they are reduced in the usual way by comparing the observed intensities with the derived quiet day curve. The graphs indicate, as Axford and Chivers state, major activity beginning about 0000 UT August 3, 1972, reaching maxima at 2200 UT August 4 and 0100 UT August 9, 1972, of greater than 12.6 dB and ~5.6 dB, respectively. These peaks are close to local noon for McMurdo although the station was not sunlit at all during the events.
S. M. Ostrow prepared the ionospheric f-plots presented on pages 112-113. The two graphs are preceded by a description of the data and their significance.
In the "Geomagnetic Activity" section the reduced magnetograms are thanks to K. Kawasaki, CIRES Fellow and Guest Worker with the National Geophysical and Solar-Terrestrial Data Center of the Environmental Data Service in Boulder, and S.-I. Akasofu, Geophysical Institute, College, Alaska. Only a few magnetograms were available for prompt reduction. The four selected cover latitudes from the auroral zone to near the equator. Leirvogur and College are reduced to the same 500 γ range. San Juan and Honolulu are reduced to the same 50 γ range. Dr. M. Sugiura and D. M. Poros of NASA, Goddard Space Flight Center, submitted the provisional equatorial Dst calculations.
Unfortunately the Alert and Deep River Charts for August have not been received in time for this publication. Calgary and Sulphur Mountain indicate the Forbush decreases at the time of the geomagnetic storms.
The final table lists auroral reports received from visual observers at the times of the geomagnetic activity.
It is to be hoped that this data collection will assist the many research workers in their detailed analysis of their observations during this most exciting period of solar-terrestrial activity.
| JUL-AUG 1972 | YEAR DAY | BARTELS 27-DAY CYCLE NUMBER | SUNSPOT NUMBERS | OBSERVED FLUX OTTAWA 2800 | SOLAR FLUX ADJUSTED TO 1 A.U. |
|--------------|----------|-----------------------------|-----------------|---------------------------|--------------------------------|
| | | | | | AFCRL 15400 | AFCRL 8800 | AFCRL 4995 | AFCRL 26895 | AFCRL 1415 | AFCRL 606 | AFCRL 410 | AFCRL 245 |
| 26 | 208 | 4 | 83 | 92 | 116.9 | 123.4* | 129.3* | 134.9 | 137.0* | 145.7 | 150.2 | 192 | 141.4 | 89.0 | 60.1 | 28.3 | 13.4 |
| 27 | 209 | 5 | 82 | 84 | 537 | 537 | 544 | 550 | 574 | 574 | 587 | 587 | 336 | 196 | 191 | 193 | 196 | 194 | 146.0 | 146.5 | 156.3 | 150.4 | 92.5 | 59.3 | 28.9 | 11.6 |
| 28 | 210 | 6 | 86 | 88 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 150.2 | 151.7 | 146.0 | 338 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 91.2 | 63.6 | 32.0 | 15.8 |
| 29 | 211 | 7 | 106 | 93 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 330 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 90.4 | 60.2 | 32.5 | 15.8 |
| 30 | 212 | 8 | 112 | 103 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 329 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 87.9 | 61.9 | 31.4 | 15.8 |
| 31 | 213 | 9 | 115 | 117 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 332 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 1 | 214 | 10 | 93 | 91 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 336 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 91.2 | 63.6 | 32.5 | 15.8 |
| 2 | 215 | 11 | 81 | 79 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 338 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 90.4 | 60.2 | 32.5 | 15.8 |
| 3 | 216 | 12 | 85 | 83 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 330 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 87.9 | 61.9 | 31.4 | 15.8 |
| 4 | 217 | 13 | 80 | 87 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 329 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 5 | 218 | 14 | 93 | 87 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 332 | 191 | 193 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 6 | 219 | 15 | 85 | 67 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 319 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 7 | 220 | 16 | 65 | 56 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 327 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 8 | 221 | 17 | 56 | 53 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 327 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 9 | 222 | 18 | 59 | 52 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 301 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 10 | 223 | 19 | 44 | 34 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 293 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 11 | 224 | 20 | 25 | 26 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 285 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 12 | 225 | 21 | 50 | 43 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 273 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 13 | 226 | 22 | 55 | 42 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 267 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
| 14 | 227 | 23 | 37 | 35 | 117.6 | 120.6 | 127.2 | 133.3* | 139.1 | 141.2* | 150.2 | 151.7 | 146.0 | 259 | 196 | 194 | 196 | 194 | 141.0 | 141.0 | 147.1* | 150.4 | 82.6 | 60.8 | 30.6 | 15.8 |
Note: AFCRL 07 August 1972 daily fluxes taken during burst.
## REGIONS OF SOLAR ACTIVITY
### JULY-AUGUST 1972
#### MCMATH REGION 11976
| YR | MO | DA | MC NO. | LAT CMD | L AREA | INT | MW NO. | LAT CMD | L MAG. | H AREA CNT | C INT FLUX |
|----|----|----|--------|---------|--------|-----|--------|---------|--------|-----------|------------|
| 72 | 7 | 28 | 11976 | N11 E83 | 24 | 600 | 1.5 | 18935 | N11 E79 | 9 | 0 | 240 | DSI | 19 | 6 |
| 72 | 7 | 29 | 11976 | N11 E72 | 22 | 2100 | 3.0 | 18935 | N11 E68 | 10 | (D) | 5 | 1250 | DKO | 64 | 18 |
| 72 | 7 | 30 | 11976 | N12 E65 | 16 | 2800 | 3.0 | 18935 | N12 E51 | 10 | (D) | 6 | 1170 | DKC | 73 | 22 |
| 72 | 7 | 31 | 11976 | N12 E51 | 16 | 3000 | 3.5 | 18937 | N11 E31 | 19 | (BF) | 2 | 0 | AXX | 91 | 27 |
| 72 | 8 | 1 | 11976 | N12 E38 | 15 | 3000 | 4.0 | 18937 | N12 E40 | 10 | (D) | 6 | 1110 | EKC | | |
| 72 | 8 | 2 | 11976 | | | | | 18937 | N11 E15 | 19 | BF | 0 | | | |
| 72 | 8 | 3 | 11976 | N13 E12 | 13 | 4300 | 3.5 | 18937 | N08 E02 | 22 | (BP) | 2 | | | |
| 72 | 8 | 4 | 11976 | N13 E02 | 11 | 5100 | 3.5 | 18937 | N08 W15 | 26 | BF | 0 | | | |
| 72 | 8 | 5 | 11976 | N13 W11 | 11 | 6000 | 3.5 | 18937 | N12 E01 | 10 | D | 0 | 1140 | FKC | 83 | 25 |
| 72 | 8 | 6 | 11976 | N13 W23 | 8 | 6200 | 3.5 | 18935 | N13 W28 | 9 | (D) | 6 | 1060 | FKC | 83 | 25 |
| 72 | 8 | 7 | 11976 | N13 W33 | 4 | 5800 | 4.0 | 18935 | N13 W39 | 10 | (D) | 6 | 910 | EKC | 66 | 20 |
| 72 | 8 | 8 | 11976 | N13 W45 | 3 | 5800 | 3.5 | 18935 | N13 W52 | 11 | (D) | 5 | 900 | DKC | 59 | 18 |
| 72 | 8 | 9 | 11976 | N14 W60 | 6 | 5500 | 3.5 | 18935 | N13 W66 | 11 | (D) | 5 | 980 | DKC | 52 | 16 |
| 72 | 8 | 10 | 11976 | N14 W70 | 5 | 5000 | 3.0 | 18935 | N14 W80 | 12 | (D) | 4 | 840 | DKC | 56 | 17 |
| 72 | 8 | 11 | 11976 | N14 W80 | 6 | 5300 | 4.0 | | | | | 3 | AXX | | |
#### 9.1 CM
| YR | MO | DA | MC NO. | LAT CMD | L AREA | INT | MW NO. | LAT CMD | L MAG. | H AREA CNT | C INT FLUX |
|----|----|----|--------|---------|--------|-----|--------|---------|--------|-----------|------------|
| 72 | 7 | 28 | 11976 | N11 E83 | 24 | 600 | 1.5 | 18935 | N11 E79 | 9 | 0 | 240 | DSI | 19 | 6 |
| 72 | 7 | 29 | 11976 | N11 E72 | 22 | 2100 | 3.0 | 18935 | N11 E68 | 10 | (D) | 5 | 1250 | DKO | 64 | 18 |
| 72 | 7 | 30 | 11976 | N12 E65 | 16 | 2800 | 3.0 | 18935 | N12 E51 | 10 | (D) | 6 | 1170 | DKC | 73 | 22 |
| 72 | 7 | 31 | 11976 | N12 E51 | 16 | 3000 | 3.5 | 18937 | N11 E31 | 19 | (BF) | 2 | 0 | AXX | 91 | 27 |
| 72 | 8 | 1 | 11976 | N12 E38 | 15 | 3000 | 4.0 | 18937 | N12 E40 | 10 | (D) | 6 | 1110 | EKC | | |
| 72 | 8 | 2 | 11976 | | | | | 18937 | N11 E15 | 19 | BF | 0 | | | |
| 72 | 8 | 3 | 11976 | N13 E12 | 13 | 4300 | 3.5 | 18937 | N08 E02 | 22 | (BP) | 2 | | | |
| 72 | 8 | 4 | 11976 | N13 E02 | 11 | 5100 | 3.5 | 18937 | N08 W15 | 26 | BF | 0 | | | |
| 72 | 8 | 5 | 11976 | N13 W11 | 11 | 6000 | 3.5 | 18937 | N12 E01 | 10 | D | 0 | 1140 | FKC | 83 | 25 |
| 72 | 8 | 6 | 11976 | N13 W23 | 8 | 6200 | 3.5 | 18935 | N13 W28 | 9 | (D) | 6 | 1060 | FKC | 83 | 25 |
| 72 | 8 | 7 | 11976 | N13 W33 | 4 | 5800 | 4.0 | 18935 | N13 W39 | 10 | (D) | 6 | 910 | EKC | 66 | 20 |
| 72 | 8 | 8 | 11976 | N13 W45 | 3 | 5800 | 3.5 | 18935 | N13 W52 | 11 | (D) | 5 | 900 | DKC | 59 | 18 |
| 72 | 8 | 9 | 11976 | N14 W60 | 6 | 5500 | 3.5 | 18935 | N13 W66 | 11 | (D) | 5 | 980 | DKC | 52 | 16 |
| 72 | 8 | 10 | 11976 | N14 W70 | 5 | 5000 | 3.0 | 18935 | N14 W80 | 12 | (D) | 4 | 840 | DKC | 56 | 17 |
| 72 | 8 | 11 | 11976 | N14 W80 | 6 | 5300 | 4.0 | | | | | 3 | AXX | | |
| From Astron. North | 1972 Aug. 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
|-------------------|-------------|---|---|---|---|----|----|----|----|----|
| 325° | 17 | 27| 14| 27| 25| 5 | 3 | | | 18 |
| 320° | 18 | 32| N | 15| 30| 30 | 5 | 3 | N | 21 |
| 315° | 24 | 40| O | 22| 42| 39 | 5 | 5 | O | 11 |
| 310° | 32 | 64| | 34| 60| 65 | 18 | 5 | | 16 |
| 305° | 65 | 90| D | 80| 64| 58 | 46 | 8 | D | 16 |
| 300° | 122 | 91| T | 66| 37| 82 | 41 | 15 | T | 30 |
| 295° | 60 | 127| A | 84| 88| 92 | 72 | 46 | A | 40 |
| 290° | 120 | 152| | 106| 122| 110| 81 | 69 | | 36 |
| 285° | 92 | 104| | 170| 107| 146| 116| 85 | | 26 |
| 280° | 86 | 76 | | 132| 164| 202| 122| 52 | | 30 |
| 275° | 90 | 95 | | 85 | 165| 224| 96 | 18 | | 32 |
| 270° | 102 | 132| | 72 | 148| 200| 85 | 26 | | 19 |
| 265° | 164 | 151| | 88 | 120| 168| 152| 31 | | 36 |
| 260° | 220 | 273| | 121| 134| 190| 141| 30 | | 41 |
| 255° | 170 | 292| | 64 | 110| 135| 121| 36 | | 38 |
| 250° | 130 | 228| | 38 | 66 | 96 | 102| 23 | | 47 |
| 245° | 128 | 130| | 42 | 51 | 72 | 79 | 16 | | 28 |
| 240° | 64 | 66 | | 33 | 54 | 61 | 63 | 22 | | 18 |
| 235° | 40 | 38 | | 26 | 50 | 42 | 31 | 7 | | 10 |
Time 1144 0615 0632 0943 0623
Obs. Pic du Midi Lomnicky
| Date | Time (UT) | ESP (°) | Solar Wind1 | Cosmic Ray Protons2 (particles/sec) |
|------------|-----------|---------|------------------------|-----------------------------------------------|
| | | | UH+ (km/sec) | TAU (Days) | 0.6-13 Mev* | 13-175 Mev** | >175 Mev |
| July-August 1972 | 0230 | -63.07 | 339 | -4.1905 | >600. | 5.14 | 1.08 |
| | 1900 | | 302 | | >600. | 2.93 | 0.871 |
| 27 | 0230 | -63.23 | 302 | -4.1414 | >600. | 2.66 | 0.762 |
| | 1900 | | 416 | | >600. | 1.64 | 0.871 |
| 28 | 0230 | -63.39 | 448 | -4.3267 | >600. | 1.76 | 0.762 |
| | 0830 | -63.71 | 566 | -4.4707 | 113. | 1.70 | 0.731 |
| | 1415 | | 566 | | 156. | 1.51 | 0.746 |
| 30 | 0800 | -63.71 | 566 | -4.5142 | 82.3 | 0.857 | Q |
| | 1415 | | 647 | | 68.3 | 0.716 | Q |
| 1406 | -065.01 | 506 | | -5.1541 | >15000. | >200. | >10. |
Note: This coverage was obtained on an emergency basis in an attempt to follow the 3B flare @ N14 W38 on 07/1520 UT. The pass was on the 64 meter antenna at Goldstone and not long enough to obtain a satisfactory solar wind signature. However, one of the highest (if not the highest) counting rates on record was obtained from Simpson's Cosmic Ray 0.6 - 13 Mev energy range.
1 Wolfe - NASA/ARC
2 Simpson - University of Chicago
* Includes He 0.6-13 Mev/nucleons and electrons ~0.5 Mev - see J. Retzler and J. A. Simpson, J. Geophys. Res., 74, 9, 2149-2160, 1969 for discussion of the electron response of Pioneer VII.
** Includes He >13 Mev/nucleons.
Q used to indicate that a rate is at its quiescent level.
Note: The notes published with the March 1972 data continue to apply to the current data.
ESP = Earth-Sun Probe Angle.
| Date | Time (UT) | ESP (°) | Solar Wind¹ | IP E-Field² | IP Magnetic Field³ | Cosmic Ray Protons⁴ |
|------------|-----------|---------|-------------|-------------|-------------------|---------------------|
| | | | U_H⁺ (km/sec) | TAU (Days) | 400 Hz (mv) | /B/ (Gamma) | ϕ (°) | Condition | >13.9 Mev | >40 Mev |
| July-August | | | | | | | | | | |
| 26 | 0810 | 51.97 | 350 | 5.1527 | .171 | 344* | 6.5 | quiet | 193. | -- |
| | 1300 | | 404 | | .179 | 116 | | | 184. | -- |
| | 1400 | | 404 | | .163 | | | | 210. | -- |
| | 1700 | | 376 | | .155 | | | | 173. | -- |
| 27 | 0820 | 51.35 | 404 | 4.9339 | .163 | | | disturbed | 88. | -- |
| | 1200 | | 404 | | .155 | | | | 72.1 | -- |
| | 1400 | | 404 | | .125 | 9. | 128 | | 71. | -- |
| | 1600 | | 376 | | .133 | | | | 67. | -- |
| | 1730 | | 376 | | .148 | | | | 66. | -- |
| 31 | 0340 | 48.94 | 404 | 4.73 | .187 | 10.4 | 356 | quiet | 11.2 | 0.52 |
| | 0730 | | 404 | | .148 | | | | 10.4 | 0.55 |
| | 1200 | | 325 | | .195 | | | | 9.8 | 0.59 |
| | 1600 | | 350 | | .163 | 8.5 | 358 | quiet | 12. | -- |
| 1 | 0210 | 48.36 | 303 | 5.0318 | 0.162 | | | quiet | 11. | -- |
| | 0600 | | 303 | | .155 | 8.8 | 335 | quiet | -- | 11. |
| | 0820 | | 325 | | .171 | | | disturbed | 5. | -- |
| | 1230 | | 350 | | .14 | 5.9 | (1) | disturbed | 10. | -- |
| | 1700 | | 350 | | .171 | | | | 11. | -- |
| 2 | 0330 | 47.77 | 350 | 4.7919 | .155 | | | disturbed | 5. | -- |
| | 0730 | | 350 | | .148 | 6.6 | 323 | very quiet| 10. | -- |
| | 1200 | | 350 | | .148 | | | very quiet| 215. | -- |
| | 1600 | | 325 | | .163 | 6.3 | 321 | very quiet| 1140. | -- |
| | 1830 | | 314 | | .133 | | | very quiet| 2130. | -- |
| | 2230 | | 350 | | .148 | 5.2 | 340 | very quiet| 2710. | -- |
| 3 | 0230 | 47.2 | 293 | 4.8785 | .187 | | | disturbed(2)| 2980. | -- |
| | 0600 | | 376 | | .133 | 8.7 | 098 | disturbed | 2670. | -- |
| | 1100 | | 350 (3) | | .361 | | | disturbed | 9750. | -- |
| | 1500 | | 585 | | .225 | 21. | (4) | disturbed | 10280. | -- |
| | 1830 | | 630 | | .244 | | | disturbed | 10850. | -- |
| | 2000 | | 731 | | .225 | | | disturbed | 6440. | -- |
| | 2400 | | 731 | | .215 | 38.4 | (5) | quiet | 1370. | -- |
| 4 | 0400 | 46.63 | 804 | 4.0716 | .159 | 22. | 218 | quiet | 640. | -- |
| | 0800 | | 731 | | .152 | | | quiet | 403. | -- |
| | 1200 | | 655 | | .156 | | | quiet | 2480. | -- |
| | 1600 | | 680 | | .113 | 14.2 | 278 | quiet | >16380. | -- |
| | 1830 | | 731 | | .133 | | | quiet | >16380. | -- |
| | 2000 | | 731 | | .113 | | | quiet | >16380. | -- |
| | 2400 | 46.06 | 1130 | 3.8215 | .129 | 19.2 | 287 | quiet | >16380. | -- |
| 5 | 0400 | | 980 | | .13 | 4.7 | 265 | quiet | >16380. | -- |
| | 0800 | | 912 | | .11 | | | quiet | >16380. | -- |
| | 1200 | | 912 | | .113 | | | quiet | >16380. | -- |
| | 1600 | | 783 | | .136 | 6.9 | 242 | quiet | >16380. | -- |
| | 1900 | | 731 | | .152 | | | quiet | >16380. | -- |
| | 2300 | 45.5 | 731 | 3.9758 | .133 | 9.4 | 276 | quiet | >16380. | -- |
| 6 | 0300 | | 630 | | .102 | | | quiet | >16380. | -- |
| | 0700 | | 680 | | .192 | 7. | 320 | quiet | >16380. | -- |
| | 1100 | | 655 | | .125 | | | quiet | >16380. | -- |
| | 1500 | | 630 | | .109 | 6.9 | 009 | quiet | >16380. | -- |
| | 1830 | | 655 | | .11 | | | quiet | >16380. | -- |
| | 2300 | 44.95 | 630 | 4.0198 | .117 | | | quiet | >16380. | -- |
| 7 | 0300 | | 542 | | .113 | 5.5 | 007 | quiet | >16380. | -- |
| | 0700 | | 542 | | .14 | 7.8 | 084 | quiet | >16380. | -- |
| | 1100 | | 564 | | .148 | 6.6 | 335 | disturbed | >16380. | -- |
| | 1500 | | 564 | | .129 | | | disturbed | >16380. | -- |
| | 1900 | | 542 | | .121 | | | disturbed | >16380. | -- |
| | 2300 | | 504 | | .148 | 6.1 | 315 | disturbed | >16380. | -- |
| 8 | 0300 | 44.41 | 504 | 4.1346 | .132 | | | disturbed | >16380. | -- |
| | 0700 | | 523 | | .14 | 5.5 | 328 | quiet | >16380. | -- |
| | 1100 | | 449 | | .14 | 6.4 | 339 | quiet | >16380. | -- |
| | 1500 | | 417 | | .14 | | | quiet | >16380. | -- |
### Pioneer IX
**July-August 1972**
| Date | Time (UT) | ESP (°) | Solar Wind1 | IP E-Field2 | IP Magnetic Field3 | Cosmic Ray Protons4 |
|------------|-----------|---------|------------------------|-----------------------|-----------------------------|-------------------------------|
| | | | UH+ (km/sec) | TAU (Days) | 400 Hz (mv) | /B/ (Gamma) | ϕ (°) | Condition | >13.9 Mev | >40 Mev |
| 9 | 1900 | 43.87 | 404 | .195 | 7.3 | 343 | quiet | 702. | 541. |
| | 2300 | | 404 | .171 | 11.8 | 304 | quiet | 414. | 391. |
| | 0200 | | 376 | .133 | 17.7 | 305 | quiet | 174. | 186. |
| | 0500 | | 376 | .19 | 14.1 | 300 | quiet | 127. | 113. |
| | 0700 | | 585 | .187 | 11. | 328 | quiet | 83. | 95. |
| | 1100 | | 585 | .155 | 10.7 | 351 | quiet | 59. | 61. |
| | 1500 | | 585 | .179 | 9.6 | 329 | very quiet | 32. | 6.7 |
| | 1900 | | 630 | .195 | 7.4 | 297 | very quiet | 28. | |
| | 2300 | 43.34 | 542 | 3.9859 | 8. | 351 | quiet | 13. | 0.53 |
| 10 | 0300 | | 542 | .163 | 8. | 351 | quiet | 10. | 0.63 |
| | 0700(8) | | 504 | .163 | 7.3 | 312 | quiet | 9.3 | 0.49 |
| | 1100 | | 468 | .148 | 6.4 | 326 | quiet | 7.8 | 0.64 |
| | 1500 | | 468 | .171 | 6.9 | 334 | very quiet | 17.1 | 0.60 |
| | 1900 | | 468 | .14 | 6.7 | 335 | very quiet | 20. | |
| | 2300 | 42.82 | 449 | 4.0911 | 7.2 | 140 (9) | quiet | 21. | |
| 11 | 0300 | | 504 | .163 | 9.7 | 110 | quiet | 29. | 28. |
| | 0700 | | 486 | .178 | 7.4 | 297 | very quiet | 28. | |
| | 1100 | | 468 | .148 | 8.8 | 351 | quiet | 33. | |
| | 1500 | | 542 | .178 | 8. | 351 | quiet | 28. | |
| | 1900 | | 468 | .14 | 8. | 351 | quiet | 24. | |
| | 2300 | 42.31 | 486 | 3.9782 | 8. | 351 | quiet | 13. | 0.53 |
| 12 | 0300 | | 468 | .14 | 7.3 | 312 | quiet | 10. | 0.63 |
| | 0700 | | 449 | .171 | 6.4 | 326 | quiet | 9.3 | 0.49 |
| | 1100 | | 486 | .155 | 6.9 | 334 | very quiet | 17.1 | 0.60 |
| | 1500 | | 430 | .171 | 6.7 | 335 | very quiet | 20. | |
| | 2300 | 41.8 | 390 | 4.1289 | 7.2 | 140 (9) | quiet | 24. | |
| 13 | 0300 | | 376 | .195 | 6.9 | 334 | very quiet | 21. | |
| | 0700 | | 350 | .178 | 6.7 | 335 | very quiet | 14. | |
| | 1100 | | 358 | .148 | 7.2 | 140 (9) | quiet | 29. | |
| | 1500 | | 376 | .178 | 9.7 | 110 | quiet | 28. | |
| 14 | 0300 | 41.3 | 449 | 3.9524 | 9.7 | 110 | quiet | 29. | |
1 Wolfe - NASA/ARC
2 Scarfe - TRW, Inc.
3 Sonett and Colburn
4 Webber - Univ. of N.H.
**Notes:**
* Reversal in field occurred at 1056 UT
(1) 0800 thru 1535 UT 312°, 1535 thru 1820 UT 40°, returning to 321° at 1820
(2) Disturbance started ~0400 UT
(3) UH+ jump at 1124 UT; E-field jump at 1128 UT; M-field jump at ~1100 UT
(4) /B/ jumped from prior ambient of ~20 to 84 Gamma starting at 1100 UT
(5) 1906 thru 2251 UT = 095°; 2252 thru 0303 UT = 247°; with field direction reversal at 2251 UT
(6) Several /B/ jumps of 1.5 to 2 Gamma at 1000 and 1200 UT
(7) /B/ jumped to ~3X ambient at 2258 UT
(8) Plasma IP shock from 3B flare of 07/1520 UT seen by Pioneer 9 at 10/0700
(9) Field direction reversal at 0825 UT
Pioneer Plasma instrument recorded three interplanetary (IP) shocks as a result of the series of flares originating from McMath region #976 (N12 E28 on 2 August 1972): at 03/1124 UT UH+ jumped from an ambient of 350 to 585 km/sec, at 03/2215 UT UH+ jumped from 600 to 900 km/sec, at 05/0030 UT UH+ jumped from 900 to >1000 km/sec. This >1000 km/sec solar wind velocity appears to be the highest velocity recorded on the Pioneer series of spacecraft to date. Pioneer 10 plasma instrument indicated similarly these IP shocks; however, the changes noted were somewhat more subtle.
Radial Alignment of Pioneers 9 and 10 (with sun) occurred at 0940 UT on 6 August 1972 with Pioneer 9 at 1.1618 x 108 km from sun, and Pioneer 10 at 3.2894 x 108 km from sun.
## SOLAR FLARES
**Confirmed Preliminary**
**JULY - AUGUST 1972**
| OBSERVATORY | DATE | OBSERVED UT | LOCATION | DURATION | IM-PORTANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|--------------|----------|----------|-------------|------|--------------|---------|
| | | | | CMP DAY | COND. TYPE | TIME | MEAS. AREA | CORR. AREA | MAX. WIDTH | MAX. INT. |
| | | | | | MIN. | UT | Sq. Deg. | Sq. Deg. | Hα | % |
### 1972 JUL
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| 26 | 0116 | 0205 | NO FLARE PATROL | | | | | | | |
| 26 | 0222 | 0229 | NO FLARE PATROL | | | | | | | |
| 26 | 0230 | 0308 | NO FLARE PATROL | | | | | | | |
| 26 | 0319 | 0357 | NO FLARE PATROL | | | | | | | |
### 001 TEHR
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| 26 | 0323E| 0330 | 0325U S10 W25 | .488 | 11965 | 24.3 | 7D --N | 3 V | .46 | DE H 1 |
| 002 TEHR | | | | | | | | | | |
| 26 | 0332 | 0344 | 0336 S10 W25 | .488 | 11965 | 24.3 | 12 --N | 3 V | .65 | F 1 |
| 003 TEHR | | | | | | | | | | |
| 26 | 0511 | 0519 | 0513 S14 E45 | .751 | 11970 | 29.6 | 8 --N | 3 V | .19 | DE 2 |
### GRP45006
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| CATA | 26 | 0915 | 0935 S05 E31 | .539 | 11968 | 28.7 | 20 --N | C 0915 | .52 | .61 |
| HTPR | 26 | 0914 | 0940 S05 E30 | .525 | 11968 | 28.6 | 26 --F | C 0920 | .31 | .30 |
| ARCE | 26 | 0914E | 0941D S04 E33 | .563 | 11968 | 28.9 | 27D --N | C 0927 | .39 | .50 |
| ATHN | 26 | 0915 | 0917 S04 E32 | .549 | 11968 | 28.8 | 20 --N | 2 C | .50 | |
| MONT | 26 | 0915 | 0932 S05 E32 | .553 | 11968 | 28.8 | 17 --N | C 0921 | 1.13 | |
| TEHR | 26 | 0917E | 0930 S05 E28 | .497 | 11968 | 28.5 | 13D --N | 4 V | .84 | |
| CAPF | 26 | 0921 | 0935D S04 E31 | .535 | 11968 | 28.7 | 14D --N | P 0925 | .86 | 1.00 |
### GRP45007
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| MONT | 26 | 1009 | 1026 N08 E08 | .146 | 11968 | 27.0 | 17 --N | C 1012 | .53 | |
| ATHN | 26 | 1012E | 1019 N07 E09 | .158 | 11968 | 27.1 | 7D --F | 3 V | .50 | |
| ATHN | 26 | 1012E | 1019 N07 E09 | .158 | 11968 | 27.1 | 7D --F | 3 V | .50 | |
| TEHR | 26 | 1013E | 1015D N08 E07 | .130 | 11968 | 27.0 | 2D --N | 1 V | .37 | |
### GRP45008
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| HTPR | 26 | 1029 | 1045 S14 E45 | .751 | 11970 | 29.8 | 16 --F | C 1032 | .21 | .30 |
| ATHN | 26 | 1029E | 1040 S15 E45 | .755 | 11970 | 29.8 | 11D --N | 3 V | .33 | |
| ATHN | 26 | 1029E | 1040 S15 E45 | .755 | 11970 | 29.8 | 11D --N | 3 V | .33 | |
### GRP45011
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| RAMY | 26 | 1425 | 1503 S10 W34 | .604 | 11965 | 24.1 | 38 --F | 3 C | 1.58 | |
| RAMY | 26 | 1425 | 1503 S10 W34 | .604 | 11965 | 24.1 | 38 --F | 3 C | .65 | |
| MCOMA | 26 | 1427 | 1440 S08 W38 | .645 | 11965 | 23.8 | 13 --N | P 1431 | .93 | 1.20 |
| CATA | 26 | 1430E | 1505D S10 W35 | .617 | 11965 | 24.0 | 35D --B | P 1430 | 2.08 | 2.61 |
| CAPS | 26 | 1432E | 1452D S11 W35 | .622 | 11965 | 24.0 | 200 --N | S 1435 | .30 | 166 |
### 012 PALE
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| 27 | 0134 | 0145 | 0137 S09 W59 | .871 | 11971 | 22.6 | 11 --F | 2 C | .36 | |
| GRP45013 | | | | | | | | | | |
| ATHN | 27 | 0523 | 0550 S14 E38 | .674 | 11970 | 30.1 | 27 --N | 1.22 | | |
| CATA | 27 | 0525 | 0555 S15 E35 | .646 | 11970 | 29.9 | 30 --N | C 0530 | 1.44 | 2.05 |
| GRP45015 | | | | | | | | | | |
| HTPR | 27 | 0631 | 0655 S05 E19 | .369 | 11968 | 28.7 | 25 --N | 1.71 | | |
| ATHN | 27 | 0634E | 0658 S05 E19 | .369 | 11968 | 28.7 | 24D --N | 2 C | 1.32 | |
| CATA | 27 | 0635 | 0645D S06 E18 | .363 | 11968 | 28.6 | 10D --B | 8 C | 2.32 | 2.48 |
| MONT | 27 | 0642E | 0701 S05 E19 | .369 | 11968 | 28.7 | 19D --N | 8 C | 2.27 | |
| CAPS | 27 | 0646E | 0706D S04 E18 | .347 | 11968 | 28.6 | 20D --B | 1 S | .80 | 216 U |
### GRP45023
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| ARCE | 27 | 1241 | 1327 S15 E35 | .646 | 11970 | 30.2 | 46 --F | 2.76 | | |
| RAMY | 27 | 1249 | 1259 S14 E33 | .616 | 11970 | 30.0 | 10 --F | 1 C | .74 | |
### GRP45025
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| HUAN | 27 | 1927 | 1947 S16 E36 | .663 | 11970 | 30.5 | 20 --F | 2.36 | | |
| BOUL | 27 | 1929E | 1950 S15 E35 | .646 | 11970 | 30.4 | 21D --F | 3 V | .36 | .48 |
### 026 HUAN
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| 27 | 2228 | 2230D | S06 E11 | .273 | 11968 | 28.8 | 2D --F | 1 P | .15 | .16 |
### GRP45027
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| MITK | 28 | 0121 | 0141 S06 E09 | .251 | 11968 | 28.7 | 20 --B | 2.43 | | |
| PALE | 28 | 0130E | 0137 S06 E08 | .241 | 11968 | 28.7 | 7D --N | 2 C | .63 | |
### 7 STATIONS REPORTING GROUP 45028.
| | | | | | | | | | | |
|-------------|------|--------------|----------|----------|-------------|------|--------------|----------|-----------|-----------|
| GRP45028 | | | | | | | | | | |
| CATA | 28 | 0615 | 0650 S13 E24 | .502 | 11970 | 30.1 | 35 --B | C 0620 | 1.04 | 1.20 |
| TEHR | 28 | 0618E | 0640 S12 E25 | .506 | 11970 | 30.1 | 22D --N | 4 V | 1.00 | |
| ATHN | 28 | 0619E | 06280 S15 E25 | .532 | 11970 | 30.1 | 9D --N | 2 V | 1.16 | |
| HTPR | 28 | 0621E | 0645 S15 E25 | .532 | 11970 | 30.1 | 24D --F | C 0622 | .41 | .50 |
| BUCA | 28 | 0622E | 0638D S13 E23 | .491 | 11970 | 30.0 | 16D --F | P 0622 | 1.10 | 1.30 |
## SOLAR FLARES
Confirmed Preliminary
**JULY - AUGUST 1972**
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | MER DIST. | LOCATION | DURATION | IM-PORTANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|-------|-----|------------|--------------|-----------|----------|----------|-------------|------|--------------|---------|
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
### OBSERVED UT
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | MER DIST. | LOCATION | DURATION | IM-PORTANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|-------|-----|------------|--------------|-----------|----------|----------|-------------|------|--------------|---------|
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
### LOCATION
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | MER DIST. | LOCATION | DURATION | IM-PORTANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|-------|-----|------------|--------------|-----------|----------|----------|-------------|------|--------------|---------|
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
### MEASUREMENTS
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | MER DIST. | LOCATION | DURATION | IM-PORTANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|-------|-----|------------|--------------|-----------|----------|----------|-------------|------|--------------|---------|
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
### REMARKS
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | MER DIST. | LOCATION | DURATION | IM-PORTANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|-------|-----|------------|--------------|-----------|----------|----------|-------------|------|--------------|---------|
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
---
55
## SOLAR FLARES
### Confirmed Preliminary
#### JULY - AUGUST 1972
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | LOCATION | DURATION | IMPOR- TANCE | OBS. | MEASUREMENTS | REMARKS |
|-------------|------|-------|-----|------------|--------------|----------|----------|------------|------|--------------|---------|
| | | | | | | | | | | | |
| GRP45059 | 29 | 1547 | 1600| 1551 | S20 | E34 | .670 | 11974 | 1.2 | 13 | --F | .51 | 2 2 2 3 |
| MCHA | 29 | 1546 | 1602| 1551 | S19 | E33 | .652 | 11974 | 1.1 | 16 | --N | .52 | .70 |
| ATHN | 29 | 1547 | 1558| 1551 | S20 | E35 | .680 | 11974 | 1.3 | 11 | --F | 1 C | .50 |
| GRP45060 | 29 | 1811 | 1833| 1814 | N12 | E83 | .990 | 11976 | 5.0 | 22 | --F | .36 | 2 1 1 3 |
| BOUL | 29 | 1811 | 1833| 1814 | N12 | E83 | .990 | 11976 | 5.0 | 22 | --F | 3 V | .36 |
| PALE | 29 | 1815E | 1844| 1631U | N12 | E79 | .979 | 11976 | 4.7 | 290 | --N | 2 C | .36 |
| GRP45061 | 29 | 1839 | 1856| 1845 | S19 | E34 | .663 | 11974 | 1.3 | 17 | --B | .58 | 3 3 3 3 |
| BOUL | 29 | 1838 | 1855| 1846 | S20 | E37 | .700 | 11974 | 1.6 | 17 | --B | 3 V | 1.00 |
| BOUL | 29 | 1838 | 1855| 1842 | S20 | E37 | .700 | 11974 | 1.6 | 17 | --B | 3 V | .52 |
| MCHA | 29 | 1840 | 1854| 1845 | S19 | E33 | .652 | 11974 | 1.3 | 14 | --N | .70 | EH |
| PALE | 29 | 1840 | 1858| 1845 | S18 | E31 | .624 | 11974 | 1.1 | 18 | --B | 2 V | .41 |
| PALE | 29 | 1840 | 1858| 1841 | S18 | E31 | .624 | 11974 | 1.1 | 18 | --N | 2 V | .72 |
| 062 PALE | 30 | 0044 | 0103| 0046 | N09 | W22 | .376 | 11968 | 28.4 | 19 | --N | 3 C | .45 |
| | 30 | 0301 | 0305| NO FLARE PATROL | | | | | | | |
| | 30 | 0315 | 0326| NO FLARE PATROL | | | | | | | |
| GRP45066 | 30 | 1134 | 1152| 1140 | S19 | E23 | .551 | 11974 | 1.2 | 18 | --F | .44 | 2 2 2 4 |
| MCHA | 30 | 1133 | 1150| 1140 | S19 | E23 | .551 | 11974 | 1.2 | 17 | --N | .31 | .30 |
| RAMY | 30 | 1134 | 1153| 1139 | S19 | E23 | .551 | 11974 | 1.2 | 19 | --F | 2 C | .56 |
| GRP45067 | 30 | 1220 | 1242| 1222 | N07 | W24 | .405 | 11968 | 28.7 | 22 | --N | .46 | 2 1 1 6 |
| RAMY | 30 | 1220E | 1242| 1222 | N07 | W24 | .405 | 11968 | 28.7 | 22D | --N | 3 C | .46 |
| ATHN | 30 | 1234E | 1242| 1234U | N08 | W27 | .453 | 11968 | 28.5 | 8D | --F | 3 V | .33 |
| GRP45069 | 30 | 1608 | 1635| 1613 | S15 | W05 | .362 | 11970 | 30.3 | 27 | --F | .37 | 2 2 2 4 |
| MCHA | 30 | 1608 | 1635| 1613 | S15 | W04 | .358 | 11970 | 30.4 | 27 | --F | .41 | .40 |
| ATHN | 30 | 1613E | 1614D| 1613U | S15 | W05 | .362 | 11970 | 30.3 | 1D | --N | 2 V | .33 |
| 073 PALE | 30 | 2342 | 2358| 2345 | S03 | E52 | .795 | 11979 | 3.9 | 16 | --B | 3 C | .72 |
| | 30 | 2358 | 0018| NO FLARE PATROL | | | | | | | |
| 074 PALE | 31 | 0003E | 0012| 0005 | S07 | E50 | .782 | 11979 | 3.8 | 9D | --N | 3 V | .52 |
| 075 PALE | 31 | 0005 | 0012| 0007 | N11 | E67 | .916 | 11976 | 5.0 | 7 | --N | 3 V | .31 |
| | 31 | 0020 | 0030| NO FLARE PATROL | | | | | | | |
| 076 PALE | 31 | 0325E | 0329D| 0328 | S04 | E50 | .776 | 11979 | 3.9 | 4D | --N | 2 C | .27 |
| GRP45080 | 31 | 0841 | 0918| 0854 | N12 | E63 | .887 | 11976 | 5.1 | 37 | --N | .29 | 2 2 2 5 |
| ARCE | 31 | 0841E | 0925D| | N12 | E67 | .916 | 11976 | 5.4 | 44D | --N | .20 |
| TEHR | 31 | 0849E | 0910| 0854 | N12 | E58 | .844 | 11976 | 4.7 | 21D | --N | 4 V | .37 |
| GRP45084 | 31 | 1059 | 1152| 1115 | S14 | W16 | .427 | 11970 | 30.3 | 53 | 1B | 2.60 | 5 5 5 7 |
| RAMY | 31 | 1059 | 1130D| 1117 | S13 | W20 | .458 | 11970 | 30.0 | 31D | 1B | 2.78 |
| ATHN | 31 | 1100E | 1140| 1112 | S18 | W15 | .468 | 11970 | 30.3 | 40D | 18 | 2.15 |
| CAPS | 31 | 1101E | 1155O| | S11 | W15 | .381 | 11970 | 30.3 | 54D | 1B | 2.50 |
| MCHA | 31 | 1105E | 1200| 1116 | S15 | W16 | .439 | 11970 | 30.3 | 55D | --B | 1.03 |
| MONT | 31 | 1109E | 1130D| 1116 | S13 | W15 | .405 | 11970 | 30.3 | 21D | IN | 4.54 |
| GRP45085 | 31 | 1100 | 1143| 1104 | S14 | W17 | .437 | 11970 | 30.2 | 43 | --B | 1.41 | 4 4 4 8 |
| RAMY | 31 | 1059 | 1130D| 1104 | S13 | W20 | .458 | 11970 | 30.0 | 31D | --B | 1.30 |
| TEHR | 31 | 1059E | 1146| 1104 | S13 | W16 | .415 | 11970 | 30.3 | 47D | --N | .84 |
| ATHN | 31 | 1100E | 1140| 1102 | S18 | W15 | .468 | 11970 | 30.3 | 40D | --B | 1.65 |
| CATA | 31 | 1100 | 1110D| 1105 | S13 | W17 | .426 | 11970 | 30.2 | 10D | --B | 1.86 |
| GRP45086 | 31 | 1159 | 1215| 1201 | N15 | E60 | .862 | 11976 | 5.0 | 16 | --N | .70 | 2 2 1 5 |
| RAHY | 31 | 1159 | 1213D| 1201 | N15 | E60 | .862 | 11976 | 5.0 | 14D | --N | 2 C |
| CAPS | 31 | 1203E | 1215D| | N15 | E59 | .854 | 11976 | 4.9 | 12D | --N | 2 V | 1.50 |
| | 31 | 2211 | 0013| NO FLARE PATROL | | | | | | | |
| | 01 | 0015 | 0100| NO FLARE PATROL | | | | | | | |
| 089 MITK | 01 | 0144 | 0201D| 0146 | N13 | E48 | .741 | 11976 | 4.7 | 17D | --B | .52 | .80 |
| | 01 | 0152 | 0159| NO FLARE PATROL | | | | | | | |
| | 01 | 0201 | 0220| NO FLARE PATROL | | | | | | | |
| | 01 | 0235 | 0241| NO FLARE PATROL | | | | | | | |
| 090 ATHN | 01 | 0433E | 0455| 0433U | S20 | W01 | .435 | 11974 | 1.1 | 22D | --N | 2 V | .50 |
---
**Note:** The table contains detailed observations of solar flares with various measurements such as duration, intensity, and location. Each entry includes the observatory name, date, start and end times, maximum phase, approximate latitude, central distance, McMath Plage region, CMP day, duration in minutes, importance, condition type, time UT, measured area, corrected area, maximum width, maximum intensity, and remarks.
## SOLAR FLARES
Confirmed Preliminary
**JULY - AUGUST 1972**
| OBSERVATORY | DATE | START | END | MAX. PHASE | APPROX. LAT. | LOCATION | DURATION MIN. | IMPOR- TANCE COND. TYPE | OBS. | MEAS. AREA Sq. Deg. | CORR. AREA Sq. Deg. | MAX. WIDTH Ha | MAX. INT. % | REMARKS |
|-------------|------|-------|-----|------------|--------------|-----------|---------------|------------------------|------|------------------|------------------|-------------|-----------|---------|
| 091 ATHN | 01 | 0505 | 0518| 0506 N08 W80 | .983 11972 | 25.2 | 13 --F 2 V | .33 | DE 3 |
| GRP45092 | 01 | 0701 | 0817| 0704 N13 E48 | .741 11976 | 4.9 | 76 -N | 2.03 | 4 3 3 6 |
| CAPS | 01 | 0608 | 0759D| N13 E51 | .774 11976 | 5.1 | 111D -B 2 P | 0612 | .40 | .60 | 265 |
| ATHN | 01 | 0658 | 0744D| 0704 N13 E48 | .741 11976 | 4.9 | 46D -N 3 C | 0703 | 1.49 | 2.27 |
| MONT | 01 | 0659 | 0804 | 0703 N13 E49 | .752 11976 | 5.0 | 65 -N | C 0703 | 2.27 |
| CAT A | 01 | 0705 | 0830D| 0705 N13 E47 | .730 11976 | 4.8 | 85D 1B P | 0705 | 2.32 | 3.34 | 219 TZ |
| GRP45093 | 01 | 0839 | 0902| 0846 S20 W01 | .435 11974 | 1.3 | 23 --B | .65 | 5 5 4 7 |
| MONT | 01 | 0839 | 0855| 0841 S20 W01 | .435 11974 | 1.3 | 16 -N | C 0841 | 1.13 |
| CAT A | 01 | 0840E| 0910 | 0850 S20 W03 | .437 11974 | 1.1 | 30D -B | P 0850 | .46 | .52 | 232 |
| CAPS | 01 | 0841E| 0905D| S18 W01 | .403 11974 | 1.3 | 24D -B 3 S | 0842 | .50 | .50 | 243 |
| ARCE | 01 | 0842E| 0852D| S19 E00 | .419 11974 | 1.4 | 10D -B | C 0842 | .50 | .50 | H |
| ONDR | 01 | 0844E| 0859 | S21 E01 | .451 11974 | 1.4 | 15D -N | V 0847 | 2.70 | CD |
| 10 STATIONS REPORTING GROUP 45094. | | | | | | | | | |
| GRP45094 | 01 | 0915 | 1032| 0923 N13 E47 | .730 11976 | 4.9 | 77 1N | 2.35 | 7 5 4 8 |
| ARCE | 01 | 0832E| 0852D| N13 E46 | .718 11976 | 4.8 | 20D -N 8 C | 0842 | .17 | .20 | Z F |
| TEHR | 01 | 0841 | 1101 | 0915 N14 E48 | .742 11976 | 5.0 | 140 18 3 V | 0900 | .30 | .50 | 216 |
| CAPS | 01 | 0900E| 0956D| N13 E50 | .764 11976 | 5.1 | 56D -B 3 S | 0900 | .30 | .50 | |
| ATHN | 01 | 0913 | 1027| 0923 N10 E45 | .704 11976 | 4.8 | 74 1N 1 | 0923 | 2.34 | 3.60 | |
| MONT | 01 | 0917 | 1023 | 0928 N13 E48 | .741 11976 | 5.0 | 66 18 8 C | 0928 | 2.58 | |
| ONDR | 01 | 0922E| 0952 | N14 E47 | .731 11976 | 4.9 | 30D 2N 8 V | 0925 | 2.90 | CIJ |
| LOCA | 01 | 0925E| 1047D| 0927 N12 E45 | .705 11976 | 4.8 | 82D 1N 8 P | 0927 | 2.53 | 3.60 | |
| 45094 | 01 | 0920 | 1215| 0935 N13 E45 | .706 11976 | 4.8 | 175 *1B | 1.86 | 2 1 1 7 |
| CAT A | 01 | 0920 | 1215| 0935 N13 E45 | .706 11976 | 4.8 | 175 18 8 C | 0935 | 1.86 | 2.62 | 302 TZ |
| RAMY | 01 | 1051E| 1108D| 1054U N13 E47 | .730 11976 | 5.0 | 17D -N 1 C | 1.58 | DE |
| 45094 | 01 | 1125 | 1220| (11389) N16 E45 | .710 11976 | 4.9 | 55 *-B | .72 | 2 1 1 6 |
| MCMA | 01 | 1125E| 1220D| N16 E45 | .710 11976 | 4.9 | 55D -B 8 C | 1138 | .72 | 1.00 | BE |
| CAPS | 01 | 1150E| 1200D| N12 E48 | .740 11976 | 5.1 | 10D -N 2 S | 1151 | .50 | .80 | 180 |
| GRP45096 | 01 | 1147 | 1222| 1154 S20 W04 | .439 11974 | 1.2 | 35 -B | 1.43 | 5 5 4 8 |
| CAT A | 01 | 1145 | 1230| 1155 S20 W04 | .439 11974 | 1.2 | 45 -B | C 1155 | 1.39 | 1.55 | 309 |
| ATHN | 01 | 1148 | 1225| 1151 S20 W02 | .436 11974 | 1.3 | 37 -B 3 C | 1150 | 1.98 | |
| MCMA | 01 | 1148 | 1225| 1150 S20 W04 | .439 11974 | 1.2 | 37 -B | C 1150 | .83 | .90 | EV |
| CAPS | 01 | 1150E| 1223D| S18 W08 | .423 11974 | 30.9 | 33D -B 1 S | 1155 | 1.50 | 1.60 | 265 |
| ONDR | 01 | 1155E| 1206 | 1158 S22 E00 | .466 11974 | 1.5 | 11D -B | V 1158 | 3.00 | CD |
| GRP45098 | 01 | 1537 | 1555| 1542 N14 E44 | .695 11976 | 5.0 | 18 --F | 2 2 0 6 |
| HUAN | 01 | 1532 | 1555 | N14 E44 | .695 11976 | 4.9 | 23 -F 1 C | T |
| BOUL | 01 | 1541 | 1555 | 1542 N13 E43 | .682 11976 | 4.9 | 14 -F 3 V | |
| GRP45099 | 01 | 1539 | 1557| 1542 S19 W04 | .424 11974 | 1.4 | 18 --F | 3 3 2 6 |
| HUAN | 01 | 1537 | 1603 | S19 W06 | .430 11974 | 1.2 | 26 -F 1 C | 1542 | .41 | .46 | E |
| MCMA | 01 | 1540 | 1556D| 1543 S20 W05 | .442 11974 | 1.3 | 16D -F C | 1543 | .52 | .50 | EH |
| BOUL | 01 | 1541 | 1551 | 1541 S18 W01 | .403 11974 | 1.6 | 10 -N 3 V | |
| 101 HUAN | 01 | 1714 | 1727 | S04 E27 | .480 11979 | 3.7 | 13 --F 1 C | 3 |
| 102 HUAN | 01 | 1719 | 1745U| S17 W43 | .746 11970 | 28.5 | 26D --F 1 C | 2 |
| 01 | 2102 | 2127 | NO FLARE PATROL | | | | | |
| 01 | 2153 | 2324 | NO FLARE PATROL | | | | | |
| 103 BOUL | 01 | 2320 | 0018 | 2320 N12 E39 | .629 11976 | 4.9 | 58 --N 3 V | 2320 | .80 | 1.20 | 1 |
| 01 | 2327 | 0238 | NO FLARE PATROL | | | | | |
| 104 BOUL | 01 | 2353 | 0004 | 2353 S14 W32 | .607 11970 | 29.6 | 11 --F 3 V | 1 |
| 105 BOUL | 02 | 0007 | 0018 | 0008 N08 W90 | 1.000 11972 | 25.3 | 11 --N 3 V | 1 |
| 106 BOUL | 02 | 0013 | 0018 | 0015 S14 W32 | .608 11970 | 29.6 | 5 --N 3 V | 1 |
| 02 | 0305 | 0316 | NO FLARE PATROL | | | | | |
| GRP45107 | 02 | 0316 | 0506| 0410 N13 E35 | .577 11976 | 4.8 | 110 18 | 3.37 | 3 1 1 3 |
| TEHR | 02 | 0316E| 0506D| 0410U N13 E35 | .577 11976 | 4.8 | 110D 18 2 V | 3.37 | Z U |
| PALE | 02 | 0321E| 0426D| 0327U N11 E37 | .601 11976 | 4.9 | 65D 18 2 V | 1.86 | U |
| ATHN | 02 | 0355E| 0451 | 0355U N15 E35 | .582 11976 | 4.8 | 56D 18 1 V | 2.64 | U F |
| 02 | 0354 | 0355 | NO FLARE PATROL | | | | | |
## SOLAR FLARES
Confirmed Preliminary
**JULY - AUGUST 1972**
| OBSERVATORY | OBSERVED UT | LOCATION | MEASUREMENTS | REMARKS |
|-------------|-------------|----------|--------------|---------|
| | DATE | START | END | MAX. PHASE | APPROX. LAT. | CENTRAL MER. DIST. | MCMATH PLAGE REGION | CMP DAY | IM-PORTANCE | COND. TYPE | OBS. TIME | MEAS. AREA Sq. Deg. | CORR. AREA Sq. Deg. | MAX. WIDTH Ha | MAX. INT. % |
| GRP45108 | 02 0619 | 0625 | 0739 N15 | E34 .568 11976 | 4.8 126 1N | 4.92 | 4 2 2 5 |
| CATA | 02 0505E | 0600 | 0515 N13 | E35 .577 11976 | 4.8 175D 2B | P 0515 | 6.96 8.60 | 288 Z |
| MITK | 02 0619E | 0703D | N14 E33 .552 11976 | 4.7 44D 2F | P 0619 | 7.84 9.20 | F |
| CAPS | 02 0624E | 0625D | N15 E35 .582 11976 | 4.9 121D 18 2 | P 0625 | 2.00 2.40 | 216 H |
| MONT | 02 0736 | 0758 | 0739 N14 | E35 .579 11976 | 4.9 22 -N | C 0739 | 1.55 |
| 109 ATHN | 02 0714E | 0731 | 0715 N10 | W90 1.000 11972 | 25.6 17D --F 3 V | DE 3 |
| GRP45113 | 02 1043 | 1112 | 1049 S12 | W41 .701 11970 | 30.4 29 -B | 1.27 | 4 4 4 5 |
| TEHR | 02 1043 | 1104 | 1048 S13 | W41 .706 11970 | 29.4 21 -N 4 V | 1.37 |
| CAPS | 02 1043 | 1118D | S11 W40 .685 11970 | 29.4 35D -B 2 V | 1050 | .60 .80 | 196 F |
| CATA | 02 1045E | 1125 | 1050 S12 | W42 .712 11970 | 29.3 40D 1B | P 1050 | 2.61 3.76 | 234 |
| ATHN | 02 1048E | 1102 | 1049 S11 | W42 .708 11970 | 29.3 14D -N 3 V | .50 |
| 114 UPIC | 02 1556 | 1622 | 1609U S04 | E30 .523 11977 | 4.9 26 -N C | 3 |
| GRP45115 | 02 1601 | 1620 | 1606 N15 | E31 .527 11976 | 5.0 19 -N | .99 | 2 2 1 3 |
| HUAN | 02 1601 | 1620 | 1607U N16 | E29 .503 11976 | 4.8 19 -N 1 C | DE |
| ATHN | 02 1604E | 1620 | 1604U N13 | E32 .535 11976 | 5.1 16D -N 2 V | .99 |
| GRP45116 | 02 1839 | 1844 | N14 E26 .452 11976 | 4.7 18 1B | 1.81 | 3 3 2 3 |
| HUAN | 02 1838 | 1946U | N15 E26 .456 11976 | 4.7 68D 1N 1 C | 1845 | 2.17 2.46 | H |
| PALE | 02 1838 | 1859 | 1842 N13 | E28 .477 11976 | 4.9 21 -B 4 V | 1.44 | F |
| BOUL | 02 1841 | 1855 | 1845 N13 | E25 .433 11976 | 4.7 14 1B 2 V | |
| GRP45117 | 02 1958 | 2336 | 2058 N14 | E28 .481 11976 | 4.9 218 2B | 9.49 | 2 2 2 2 |
| HUAN | 02 1958 | 2117D | N15 E27 .470 11976 | 4.9 79D 2B 1 P | 2057 | 8.66 10.00 | UZ |
| PALE | 02 2006E | 2336 | 2058 N13 | E28 .477 11976 | 4.9 2100 2B 3 V | 10.31 | Z U |
| GRP45118 | 02 2006 | 2336 | N13 E27 .463 11976 | 4.9 210 1B | 2.75 | 2 2 2 3 |
| PALE | 02 2006E | 2336 | 2010 N13 | E28 .477 11976 | 4.9 210D 1B 3 V | 3.09 | Z U |
| PALE | 02 2006E | 2336 | 2023 N13 | E28 .477 11976 | 4.9 210D 1B 3 V | 4.13 | Z U |
| BOUL | 02 2248 | 0111 | 2248 N12 | E25 .430 11976 | 4.8 143 1B 1 V | 2248 | 2.40 2.60 |
| 119 HUAN | 02 2058 | 2103D | 2100 S18 | W22 .534 11974 | 1.2 5D --F 1 P | 2100 | .26 .26 | D 2 |
| 120 PALE | 02 2059E | 2106 | 2100U S19 | E21 .535 11979 | 4.4 7D --N 3 V | .52 | F 2 |
| 121 PALE | 02 2253 | 2302 | 2254 S19 | E22 .544 11979 | 4.6 9 --N 3 V | .41 | DE 2 |
| 122 BOUL | 02 2255 | 2256 | 2255 S19 | W23 .554 11974 | 1.2 1 --F 1 V | 2 |
| 124 ARCE | 03 1220E | 1232D | N14 E14 .275 11976 | 4.6 12D --F C | 1220 | .17 .20 | 4 |
| 125 HUAN | 03 1245 | 1259 | 1248 N08 | W87 .998 11968 | 27.0 14 --N 2 C | 1248 | .21 | D 4 |
| 126 ARCE | 03 1317 | 1347 | N10 E18 .314 11976 | 4.9 30 --F C | 1337 | .30 .30 | 4 |
| GRP45127 | 03 1405 | 1413 | 1407 N11 | E16 .286 11976 | 4.8 8 --F 1 C | 1407 | .36 | 2 2 1 3 |
| HUAN | 03 1405 | 1413 | 1407 N11 | E17 .302 11976 | 4.9 8 --F 1 C | 1407 | .36 .38 | DE |
| RAMY | 03 1408E | 1412D | N10 E15 .266 11976 | 4.7 4D -F 2 V | 1503 | 1.52 2.04 |
| 03 1502 | 1504 NO FLARE PATROL |
| GRP45128 | 03 1502 | 1544 | 1504 S13 | W57 .863 11970 | 30.4 42 -N | 2.14 | 3 3 2 3 |
| RAMY | 03 1502E | 1525D | 1504U S14 | W57 .866 11970 | 29.4 23D 1N 2 V | 2.75 | DE |
| HUAN | 03 1502 | 1537U | S13 W57 .863 11970 | 29.4 35D -N 1 C | 1503 | 1.52 2.04 |
| ATHN | 03 1503E | 1544 | 1503 S12 | W56 .853 11970 | 29.4 41D -N 1 | 1503 | 1.52 2.04 |
| 129 HUAN | 03 1747 | 1755 | 1748 S09 | E68 .936 11980 | 8.8 8 --F 1 C | 1 |
| 03 2003 | 2020 NO FLARE PATROL |
| 130 HUAN | 03 2037 | 2043 | 2038 N10 | E13 .234 11976 | 4.8 6 --F 1 C | 2038 | .31 .32 | 1 |
| 03 2051 | 2143 NO FLARE PATROL |
| 131 HUAN | 03 2144E | 2215D | N13 E12 .238 11976 | 4.8 31D -B 1 P | 2215 | 1.29 1.35 | B 2 |
| 03 2215 | 2217 NO FLARE PATROL |
| 132 MITK | 04 0140E | 0151 | N10 E10 .185 11976 | 4.8 11D --F C | 0140 | .52 .50 | D 2 |
## SOLAR FLARES
**Confirmed**
**Preliminary**
**JULY-AUGUST 1972**
| OBSERVATORY | OBSERVED UT | LOCATION | DURATION | MEASUREMENTS | REMARKS |
|-------------|-------------|----------|----------|--------------|---------|
| | DATE START | END | MAX. | APPROX. | |
| | | | PHASE | LAT. | |
| | | | | MER. DIST. | |
| | | | | CENTRAL | |
| | | | | MCMATH | |
| | | | | PLAGE | |
| | | | | REGION | |
| | | | | CMP DAY | |
| | | | | MIN. | |
| | | | | IMPOR- | |
| | | | | TANCE | |
| | | | | COND. TYPE | |
| | | | | TIME UT | |
| | | | | MEAS. AREA | |
| | | | | CORR. AREA | |
| | | | | MAX. WIDTH | |
| | | | | MAX. INT. | |
### Observations:
- **GRP45133**
- 04 0530 0855 0639 N14 E09 .207 11976 4.9 205 3B C 0638 15.08 15.41 536 Z
- 04 0525 0905 0638 N15 E08 .207 11976 4.8 220 3B C 0638 15.08 15.41 536 Z
- 04 0534E 0615D 0534 N15 E09 .219 11976 4.9 41D -N 1 0534 3.45 3.35 530
- 04 0605E 1150D 0638 N12 E08 .172 11976 4.9 353D 3B 2 P 0639 15.00 15.00 530
- 04 0621 0852 0638 N15 E09 .219 11976 4.9 151 2B 3 0638 11.52 11.32
- 04 0635 0848D 0635 N14 E09 .207 11976 4.9 133D 3B C 0635 15.47
- 04 0645E 0730D 0645 N14 E08 .195 11976 4.9 45D 4B P 0645 25.89 26.40
- 04 0646E 0703 0645 N14 E10 .220 11976 5.0 17D 3B P 0654 15.47 15.00
- **GRP45135**
- 04 0751 1000 0820 N13 E08 .183 11976 4.9 129 *3B C 0751 16.34 19.30 HITB
- 04 0751E 1000D 0820 N13 E08 .183 11976 4.9 129D 3B C 0751 16.34 19.30 HITB
- 04 0815E 1130D 0820 N12 E06 .147 11976 4.8 195D 2N C 0820 7.35 7.40
- **GRP45136**
- 04 1514 1528 1517 N13 W02 .127 11976 4.5 14 --F C 1516 .41 .40 E
- 04 1514 1528 1516 N14 W02 .144 11976 4.5 14 --F C 1516 .41 .40 E
- 04 1514 1521 1515U N13 W01 .123 11976 4.6 7 --F 1 C 1515 .26 .26 D
- 04 1516E 1534 1520 N12 W02 .110 11976 4.5 18D -N 1 1520 .52 .50
- **GRP45144**
- 05 0654 0703 0657 N14 W04 .154 11976 5.0 9 --N C 0659 1.13
- 05 0652E 0701 0659 N14 W04 .154 11976 5.0 9D -N C 0659 1.13
- 05 0655 0705 0655 N13 W04 .139 11976 5.0 10 -N C 0655 .69 .70 168
- **GRP45145**
- 05 0709 0723 0712 N16 W09 .230 11976 4.6 14 --F C 0709 1.40 1.40 171
- 05 0708E 0728D N17 W05 .208 11976 4.9 20D -N 4 P 0709 1.40 1.40 171
- 05 0710 0725 0710 N15 W11 .242 11976 4.5 15 -N C 0710 .87 .90 178
- 05 0712E 0720 0712U N15 W10 .230 11976 4.5 8D -F 2 V .99 DE
- **GRP45153**
- 05 0923 0933 0927 S08 W17 .375 11979 4.1 10 --F C 0927 .30 .30
- 05 0923 0931D 0927 S08 W17 .375 11979 4.1 8D -N C 0927 .30 .30
- 05 0923 0933 0926 S08 W16 .363 11979 4.2 10 -F C 0926 .10
- **GRP45154**
- 05 1039 1102 1041 S14 W64 .918 11974 31.6 23 --F C 1045 .23 .55 182
- 05 1037E 1059 1037U S14 W65 .924 11974 30.6 22D -F 3 V .17 DE
- 05 1040 1105 1045 S13 W63 .909 11974 30.7 25 -N C 1045 .23 .55 182
- **GRP45156**
- 05 1119 1134 1124 N13 W12 .237 11976 4.6 15 --N .53 3 3 2 5
- 05 1119 1131 1123 N14 W12 .246 11976 4.6 12 -N 3 C .56 F
- 05 1123E 1131 1125 N17 W12 .277 11976 4.6 8D -N 3 V .50 DE
- 05 1126E 1139D N07 W12 .207 11976 4.6 13D -F 2 S
## SOLAR FLARES
Confirmed Preliminary
**JULY-AUGUST 1972**
| OBSERVATORY | OBSERVED UT | LOCATION | MEASUREMENTS | REMARKS |
|-------------|-------------|----------|--------------|---------|
| | DATE | START | END | MAX. PHASE | APPROX. LAT. | MER. DIST. | CENTRAL MCMATH PLAGE REGION | CMP DAY | DURATION MIN. | IM-PORTANCE COND. TYPE | OBS. TIME UT | MEAS. AREA Sq. Deg. | CORR. AREA Sq. Deg. | MAX. WIDTH Ha | MAX. INT. % |
| GRP45160 | 1972 AUG | 05 1426 | 1434 1428 | N16 W14 .292 11976 | 4.6 8 --F | .53 | 2 2 2 6 |
| BOUL | 05 1426 | 1432 1429 | N16 W13 .278 11976 | 4.6 6 --F 2 V 1429 | .60 | 1.00 DE |
| RAMY | 05 1426 | 1435 1427 | N15 W14 .282 11976 | 4.6 9 --F 3 C | .46 |
| 162 PALE | 05 1727 | 1738 1731 | N16 W17 .332 11976 | 4.5 11 --N 2 C | .36 F 3 |
| GRP45164 | 05 2019 | 2037 2024 | N12 W12 .229 11976 | 4.9 18 --F | .46 3 3 3 3 |
| RAMY | 05 2018 | 2037 2021 | N12 W12 .229 11976 | 4.9 19 --F 3 C | .65 DE |
| MCMA | 05 2019 | 2036 2022 | N12 W12 .229 11976 | 4.9 17 --F C 2022 | .31 | .30 E |
| PALE | 05 2024E | 20340 2028U | N11 W12 .222 11976 | 5.0 10D --N 3 V | .41 |
| | 05 2334 | 2353 NO FLARE PATROL | | | | | | |
| | 05 2357 | 0008 NO FLARE PATROL | | | | | | |
| | 06 0025 | 0037 NO FLARE PATROL | | | | | | |
| | 06 0043 | 0046 NO FLARE PATROL | | | | | | |
| 166 MITK | 06 0056 | 0108 0058 | N08 W15 .259 11976 | 4.9 12 --F C 0058 | .52 | .50 D 1 |
| | 06 0135 | 0138 NO FLARE PATROL | | | | | | |
| GRP45167 | 06 0236 | 0251 0240 | S18 W74 .974 11974 | 31.6 15 --F | .60 2 2 2 5 |
| MITK | 06 0236 | 0251 0241 | S18 W74 .974 11974 | 30.6 15 1F C 0241 | .93 E |
| PALE | 06 0238E | 02390 0238U | S17 W73 .969 11974 | 30.6 1D --N 2 C | .27 |
| GRP45168 | 06 0422 | 0429 0423 | N12 W19 .336 11976 | 4.8 7 --N | .37 3 3 3 5 |
| MANI | 06 0402E | 0425 0420 | N13 W21 .372 11976 | 4.6 23D --N 1 0420 | .41 | .64 DE |
| ATHN | 06 0418 | 0427 0421 | N10 W20 .345 11976 | 4.7 9 --N 1 C | .50 DE |
| TEHR | 06 0425 | 0435D 0428 | N14 W16 .302 11976 | 5.0 10D --F 3 V | .19 DE |
| 169 ATHN | 06 0446 | 0458 0449 | N11 W17 .301 11976 | 4.9 12 --N 2 C | .50 DE 4 |
| GRP45170 | 06 0630 | 0644 0636 | N13 W17 .311 11976 | 5.0 14 --F | .45 2 2 2 5 |
| ATHN | 06 0630 | 0640 0632 | N11 W17 .301 11976 | 5.0 10 --F 2 C | .33 DE |
| TEHR | 06 0635E | 0647 0640 | N14 W17 .317 11976 | 5.0 12D --N 3 V | .56 DE |
| GRP45173 | 06 0903 | 0928 0910 | S09 W33 .591 11979 | 3.9 25 --F | .35 4 4 4 5 |
| ATHN | 06 0901 | 0923 0910 | S08 W35 .611 11979 | 3.6 22 --F 3 V | .33 DE |
| CAT A | 06 0905 | 0925 0910 | S08 W34 .598 11979 | 3.6 20 --N C 0910 | .46 | .58 190 |
| ARCE | 06 0907E | 0940D 0910 | S09 W30 .552 11979 | 4.1 33D --N C 0910 | .30 | .30 |
| CAPS | 06 0911E | 0924D 0910 | S09 W31 .565 11979 | 4.1 13D --F 3 S 0912 | .30 | .30 147 |
| GRP45174 | 06 0920 | 0934 0925 | N17 W26 .464 11976 | 4.4 14 --N | .60 3 3 3 7 |
| CAPS | 06 0920 | 0929D 0920 | N16 W23 .416 11976 | 4.7 9D --F 3 V 0923 | .70 | .70 158 |
| ARCE | 06 0920E | 0930D 0920 | N16 W26 .459 11976 | 4.4 10D --N C 0925 | .59 | .70 |
| ATHN | 06 0925E | 0934 0925U | N18 W29 .510 11976 | 4.2 9D --N 3 V | .50 DE |
| GRP45175 | 06 1134 | 1147 1138 | S08 W33 .585 11979 | 4.0 13 --B | .41 4 4 3 5 |
| ONDR | 06 1133E | 1144 1135 | S08 W36 .624 11979 | 3.8 11D --B V 1134 | 2.50 CDH |
| CAT A | 06 1135 | 1145 1135 | S07 W36 .619 11979 | 3.8 10 --B C 1135 | .40 | .51 240 |
| CAPS | 06 1138E | 1152D 1135 | S09 W28 .526 11979 | 4.4 14D --B 2 V 1138 | .50 | .60 265 |
| ATHN | 06 1141E | 1145 1141U | S06 W33 .575 11979 | 4.0 4D --F 2 V | .33 DE |
| GRP45177 | 06 1547 | 1605 1551 | N20 W20 .405 11976 | 5.2 18 --N | .70 3 3 3 8 |
| HUAN | 06 1546 | 1558 1550 | N20 W23 .443 11976 | 4.9 12 --F 1 C 1550 | .21 | .23 D |
| CAPS | 06 1546E | 1607D 1552 | N19 W17 .358 11976 | 5.4 21D --B 3 V 1547 | .30 | .30 216 |
| BOUL | 06 1549 | 1610 1552 | N21 W20 .414 11976 | 5.2 21 --F 3 V 1552 | 1.60 | 1.70 |
| GRP45178 | 06 1613 | 1627 1615 | N18 W19 .375 11976 | 5.3 14 --F | .27 4 4 3 6 |
| RAMY | 06 1612 | 1627 1613 | N18 W19 .375 11976 | 5.2 15 --F 3 C | .31 DE |
| BOUL | 06 1613 | 1635 1614 | N19 W16 .346 11976 | 5.5 22 --F 3 V 1614 | .30 | .30 |
| RAMY | 06 1613E | 1627 1613U | N18 W19 .375 11976 | 5.3 14D --N 3 V | .31 DE |
| ONDR | 06 1614E | 1622 1617 | N15 W23 .411 11976 | 5.0 8D --F V 1617 | 1.90 CE |
| HUAN | 06 1614E | 1625D 1617 | N18 W19 .375 11976 | 5.3 11D --F 1 C 1615 | .21 | .22 D |
| GRP45179 | 06 1649 | 1707 1653 | N13 W24 .447 11976 | 4.9 18 --N | .52 3 3 3 3 |
| HUAN | 06 1648 | 1653D 1650 | N12 W23 .398 11976 | 5.0 5D --F 1 P 1651 | .36 | .39 E |
| BOUL | 06 1650 | 1712 1650 | N14 W25 .436 11976 | 4.8 22 --N 3 V 1650 | .30 | .30 |
| PALE | 06 1655E | 1701 1656 | N14 W23 .406 11976 | 5.0 6D --N 3 C | .91 F |
| GRP45180 | 06 1749 | 1813 1759 | S01 W43 .689 11979 | 3.5 24 --N | .76 2 2 2 2 |
| BOUL | 06 1745 | 1810 1800 | N02 W43 .683 11979 | 3.5 25 --N 2 C 1800 | .97 | 1.32 |
| PALE | 06 1753 | 1816 1757 | S03 W42 .681 11979 | 3.6 23 --N 3 C | .55 F |
| GRP45181 | 06 2143 | 2202 2148 | N15 W31 .525 11976 | 4.6 19 --F | .31 2 2 2 2 |
| BOUL | 06 2143 | 2205 2145 | N15 W34 .567 11976 | 4.4 22 --F 3 V 2145 | .30 | .30 |
| PALE | 06 2148E | 2158 2150U | N15 W28 .483 11976 | 4.8 10D --N 3 V | .31 F |
## Solar Flares
**Confirmed Preliminary**
**July - August 1972**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
**4 Stations Reporting Group 45184. 1 Stations Observing and Not Reporting.**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
**185 Mont**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
**GRP45190**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
**GRP45191**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
**GRP45192**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
**12 Stations Reporting Group 45193. 1 Stations Observing and Not Reporting.**
| Observatory | Date | Start | End | Max. Phase | Approx. Lat. | Mer. Dist. | Location | Duration Min. | Imp. Cond. | Type | Obs. Time UT | Meas. Area Sq. Deg. | Corr. Area Sq. Deg. | Max. Width Hα | Max. Int. % | Remarks |
|-------------|------|-------|-------|------------|--------------|------------|-----------|-------------|-------------|---------|-------------|------------------|------------------|---------------|-------------|---------|
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
---
61
## SOLAR FLARES
**Confirmed**
**Preliminary**
**JULY - AUGUST 1972**
| OBSERVATORY | OBSERVED UT | LOCATION | DURATION | MEASUREMENTS | REMARKS |
|-------------|-------------|----------|----------|--------------|---------|
| | DATE | START | END | APPROX. LAT. | CENTRAL DISTANCE | CMP DAY | IM-PORTANCE | OBS. | MEAS. AREA | CORR. AREA | MAX. WIDTH | MAX. INT. |
| | | | | MER. DIST. | MCMATH PLAGE REGION | COND. TYPE | TIME | Sq. Deg. | Sq. Deg. | Ha | % |
| GRP45196 | 07 1922 | 2047 | 1925 | N12 W41 | .654 11976 | 4.7 | 85 --N | .46 | 2 2 2 3 |
| PALE | 07 1922 | 2047 | 1925 | N11 W40 | .640 11976 | 4.8 | 85 --B 3 C | .55 |
| HUAN | 07 1925U | 1940 | | N12 W41 | .654 11976 | 4.7 | 15D --F 1 C | 1930 | .36 | .48 | DT |
| 198 MITK | 08 0123 | 0133 | 0126 | S12 W58 | .870 11979 | 3.7 | 10 --F | C 0126 | 1.03 | 2.00 | D 2 |
| | 08 0136 | 0145 | NO FLARE PATROL | | | | | | | | |
| GRP45199 | 08 0355 | 0405 | 0358 | N12 W44 | .692 11976 | 4.9 | 10 --F | C 0358 | 1.44 | 2.00 | 2 2 2 5 E |
| MITK | 08 0355 | 0404 | 0358 | N12 W43 | .679 11976 | 4.9 | 9 --F | C 0358 | .83 | 1.16 |
| MANI | 08 0357E | 0405 | 0358 | N12 W45 | .704 11976 | 4.8 | 8D --N 2 | 0358 |
| GRP45201 | 08 0553 | 0635 | 0601 | S08 W60 | .879 11979 | 3.7 | 42 --N | .33 | 3 3 3 6 DE |
| ATHN | 08 0553 | 0702D | 0559 | S11 W59 | .876 11979 | 3.8 | 69D --N 2 C | .33 |
| TEHR | 08 0600E | 0607 | 0603 | S09 W59 | .872 11979 | 3.8 | 7D --N 4 V | .19 |
| CATA | 08 0600E | 0605 | 0600 | S08 W60 | .879 11979 | 3.8 | 5D --B | P 0600 | .46 | .93 | 234 |
| CATA | 08 0625 | 0635 | 0625 | S02 W64 | .902 11979 | 3.5 | 10 --B | C 0625 | .23 | .53 | 209 |
| GRP45203 | 08 0737 | 0751 | 0744 | S09 W62 | .896 11979 | 3.7 | 14 --N | .35 | 4 4 3 7 |
| UPIC | 08 0733 | 0750 | 0734U | S09 W63 | .903 11979 | 3.6 | 17 --F | C 0743 | .52 |
| MONT | 08 0739 | 0745 | 0743 | S10 W60 | .882 11979 | 3.8 | 6 --N | C 0745 | .23 | .51 | 234 |
| CATA | 08 0740 | 0750 | 0745 | S08 W61 | .887 11979 | 3.7 | 10 --B | C 0747 | .30 | 182 |
| CAPS | 08 0746E | 0758D | | S08 W63 | .902 11979 | 3.6 | 12D --N 4 V | 0747 |
| 208 HUAN | 08 1533 | 1538 | 1534 | N11 W55 | .814 11976 | 4.5 | 5 --F | 1 C 1534 | .26 | .43 | D 3 |
| GRP45209 | 08 1737 | 1749 | 1743 | N11 W62 | .878 11976 | 4.1 | 12 --N | .36 | 2 2 1 3 F |
| PALE | 08 1737 | 1751 | 1743 | N11 W67 | .916 11976 | 3.7 | 14 --N | 2 C 0811 | .21 |
| HUAN | 08 1737 | 1747 | | N11 W57 | .834 11976 | 4.5 | 10 --N | 1 C 0811 | .21 |
| 210 PALE | 08 1952 | 2003 | 1956 | S10 W69 | .943 11979 | 3.7 | 11 --N | 2 C 0811 | .21 |
| | 08 2044 | 2117 | NO FLARE PATROL | | | | | | | | |
| 211 PALE | 08 2128 | 2149 | 2134 | S10 W70 | .949 11979 | 3.6 | 21 --B 2 C | .72 | DE 1 |
| | 08 2355 | 0002 | NO FLARE PATROL | | | | | | | | |
| 45213 | 09 0808 | 0827 | 0810 | S04 W78 | .980 11979 | 3.5 | 19 --N | .35 | 3 3 3 8 |
| MONT | 09 0806 | 0825 | 0811 | S05 W80 | .987 11979 | 3.3 | 19 --N | C 0811 | .21 |
| TEHR | 09 0809E | 0825 | 0810U | S04 W76 | .973 11979 | 3.6 | 16D --N 3 V | .56 |
| CATA | 09 0810 | 0830 | 0810 | S02 W78 | .979 11979 | 3.5 | 20 --N | C 0810 | .29 | 174 |
| TEHR | 09 0819 | 0824 | 0820 | S09 W75 | .972 11979 | 3.7 | 5 --N 3 V | .19 | DE |
| GRP45215 | 09 0834 | 0951 | 0939 | N17 W63 | .886 11976 | 4.6 | 77 --F | .30 | 2 2 2 8 |
| ARCE | 09 0831E | 0930D | | N16 W62 | .878 11976 | 4.7 | 59D --N | C 0842 | .89 | 1.80 |
| ARCE | 09 0837E | 0940D | | N19 W62 | .879 11976 | 4.7 | 63D --F | C 0847 | .39 | .80 |
| MONT | 09 0937 | 0951 | 0939 | N17 W63 | .886 11976 | 4.7 | 14 --N | C 0939 | .21 |
| GRP45217 | 09 1024 | 1034 | 1026 | N16 W63 | .886 11976 | 4.7 | 10 --N | .32 | 3 3 3 6 |
| MONT | 09 1022 | 1036 | 1026 | N17 W63 | .886 11976 | 4.7 | 14 --N | C 1026 | .52 |
| CATA | 09 1025 | 1035 | 1025 | N17 W65 | .901 11976 | 4.6 | 10 --B | C 1025 | .17 | 219 |
| TEHR | 09 1026E | 1031 | 1027U | N15 W62 | .878 11976 | 4.8 | 5D --N 3 V | .28 | F |
| GRP45220 | 09 1612 | 1702 | 1614 | S08 W80 | .988 11979 | 3.7 | 50 --F | .36 | 4 2 1 8 DE |
| ATHN | 09 1559E | 1630D | 1600 | S10 W81 | .991 11979 | 3.6 | 31D --N 3 V | .17 |
| HUAN | 09 1611U | 1657U | | S08 W80 | .988 11979 | 3.7 | 46D --F 1 C | .17 |
| BOUL | 09 1612 | 1702 | 1614 | S08 W79 | .985 11979 | 3.8 | 50 --N 3 V | .36 |
| PALE | 09 1640E | 1700 | 1640U | S09 W80 | .988 11979 | 3.7 | 20D --N 2 C | .36 |
| 224 PALE | 09 2243E | 2251D | 2245 | S10 W85 | .998 11979 | 3.6 | 8D --N 3 V | .62 | F 2 |
| 225 MITK | 10 0111 | 0121 | 0116 | S11 W90 | 1.000 11979 | 3.3 | 10 1N | C 0116 | 1.44 | 3 |
| GRP45226 | 10 0800 | 1111 | 0855 | N16 W48 | .743 11987 | 6.7 | 191 --N | 1.86 | 4 2 1 9 K |
| ARCE | 10 0800E | 0951D | | N16 W47 | .731 11987 | 6.8 | 111D --N | C 0800 | .50 | .70 |
| MONT | 10 0810 | 1109 | 0855 | N14 W49 | .752 11987 | 6.7 | 179 --B | C 0855 | 1.86 | H |
| UPIC | 10 0856E | 0909D | | N17 W47 | .733 11987 | 6.8 | 13D --F | C 1038 | 3.20 | CE |
| ONDR | 10 1036E | 1111 | | N14 W48 | .740 11987 | 6.8 | 35D 1B V | 1038 |
| GRP45230 | 10 1248 | 1304 | 1252 | S07 W90 | 1.000 11979 | 3.8 | 16 --N | .28 | 4 3 2 10 |
| ARCE | 10 1208E | 1335D | | S10 W90 | 1.000 11979 | 3.8 | 87D --B | C 1220 | .75 |
| CATA | 10 1245 | 1300 | 1255 | S04 W90 | 1.000 11979 | 3.8 | 15 --N | C 1255 | .29 | 151 T |
| HUAN | 10 1250 | 1303 | 1252 | S08 W90 | 1.000 11979 | 3.8 | 13 --F 1 C 1252 | .26 | D |
| ATHN | 10 1250E | 1308 | 1250U | S08 W90 | 1.000 11979 | 3.8 | 18D --N 3 V | .26 | DE |
| 234 HUAN | 10 1717 | 1723 | | S08 W90 | 1.000 11979 | 4.0 | 6 --F 1 C 1721 | .31 | 3 |
| 237 PALE | 10 2049 | 2105 | 2050U | N09 W84 | .993 11976 | 4.6 | 16 --N 2 C | .45 | F 2 |
## SOLAR FLARES
Confirmed Preliminary
**JULY-AUGUST 1972**
| OBSERVATORY | OBSERVED UT | LOCATION | DURATION | MEASUREMENTS | REMARKS |
|-------------|-------------|----------|----------|--------------|---------|
| | DATE START | END | MAX. PHASE | APPROX. LAT. | CENTRAL MER. DIST. | MCMATH PLAGE REGION | CMP DAY | IM-PORTANCE | COND. TYPE | TIME UT | MEAS. AREA Sq. Deg. | CORR. AREA Sq. Deg. | MAX. WIDTH Ha | MAX. INT % |
| 1972 AUG | 10 2243 | 2305 | NO FLARE PATROL | 2308U N11 W88 | .998 11976 | 4.4 | 8D -N 2 C | .27 |
| 238 PALE | 10 2306 | 2314D | NO FLARE PATROL | 2308U N11 W88 | .998 11976 | 4.4 | 8D -N 2 C | .27 |
| 240 MITK | 11 0202 | 0215 | NO FLARE PATROL | 0204 N15 W56 | .825 11987 | 6.9 | 13 -N C | 0204 | .93 | 1.70 |
| GRP45241 | 11 0547 | 0559 | NO FLARE PATROL | 0550 N13 W90 1.000 11976 | 4.5 | 12 -B | .58 |
| ATHN | 11 0543 | 0557 | NO FLARE PATROL | 0549 N12 W90 1.000 11976 | 4.5 | 14 -N 2 C | .58 |
| CATA | 11 0550 | 0600 | NO FLARE PATROL | 0550 N14 W90 1.000 11976 | 4.5 | 10 1B C | .58 |
| GRP45243 | 11 0758 | 0805 | NO FLARE PATROL | 0800 N12 W90 1.000 11976 | 4.6 | 7 -N | .38 |
| MONT | 11 0754 | 0804 | NO FLARE PATROL | 0756 N11 W90 1.000 11976 | 4.6 | 10 -N C | .52 |
| CATA | 11 0800 | 0805 | NO FLARE PATROL | 0800 N14 W90 1.000 11976 | 4.6 | 5 -N C | .40 |
| ARCE | 11 0800E | 0805D | NO FLARE PATROL | 0805D N10 W90 1.000 11976 | 4.6 | 5D -N P | .23 |
| GRP45246 | 11 1048 | 1058 | NO FLARE PATROL | 1052 S15 E42 .729 11986 | 14.6 | 10 --F | .50 |
| MONT | 11 1048 | 1057 | NO FLARE PATROL | 1052 S13 E42 .720 11986 | 14.6 | 9 -N C | .72 |
| TEHR | 11 1052E | 1058 | NO FLARE PATROL | 1052U S14 E45 .756 11986 | 14.8 | 6D -F 3 V | .28 |
| CAPS | 11 1052E | 1058D | NO FLARE PATROL | 1058D S17 E40 .719 11986 | 14.5 | 6D -F 3 V | .28 |
| 5 STATIONS REPORTING GROUP 45247 | 11 1227 | 1307 | NO FLARE PATROL | 1235 N13 W90 1.000 11976 | 4.8 | 40 2B | 2.44 |
| ATHN | 11 1217E | 1305 | NO FLARE PATROL | 1224 N13 W90 1.000 11976 | 4.8 | 48D 2N 2 C | 3.71 |
| ARCE | 11 1230E | 1308 | NO FLARE PATROL | 1235 N13 W90 1.000 11976 | 4.8 | 38D 28 C | 1.16 |
| CATA | 11 1235 | 1240D | NO FLARE PATROL | 1235 N13 W90 1.000 11976 | 4.8 | 5D 1B P | 1.16 |
| 45247 | 11 1252 | 1314 | NO FLARE PATROL | 1303 N10 W90 1.000 11976 | 4.8 | 22 *2B | 1.47 |
| CAPS | 11 1216 | 1320D | NO FLARE PATROL | 1303 N10 W90 1.000 11976 | 4.8 | 64D 3N 3 P | 1.47 |
| ARCE | 11 1252 | 1308 | NO FLARE PATROL | 1303 N10 W90 1.000 11976 | 4.8 | 16 1B C | 1.47 |
| 45247 | 11 1217 | 1304 | NO FLARE PATROL | 1247 N14 W90 1.000 11976 | 4.8 | 47 *1B | 2.20 |
| ATHN | 11 1217E | 1305 | NO FLARE PATROL | 1248 N13 W90 1.000 11976 | 4.8 | 48D 1B 2 C | 2.90 |
| HERS | 11 1236E | 1302 | NO FLARE PATROL | 1245 N15 W90 1.000 11976 | 4.8 | 26D 2N P | 2.90 |
| 249 MITK | 12 0253 | 0328 | NO FLARE PATROL | 0257 N16 W71 .940 11987 | 6.8 | 35 1N C | 0257 | 1.13 |
| GRP45251 | 12 0710 | 0744 | NO FLARE PATROL | 0715 N15 W76 .965 11987 | 6.6 | 34 --N | .22 |
| MONT | 12 0709E | 0742 | NO FLARE PATROL | 0715 N15 W78 .973 11987 | 6.6 | 33D -N C | .21 |
| CATA | 12 0710 | 0745 | NO FLARE PATROL | 0715 N15 W74 .956 11987 | 6.7 | 35 -N C | .23 |
| GRP45252 | 12 0803 | 0842 | NO FLARE PATROL | 0811 N15 W77 .970 11987 | 6.6 | 39 --B | .27 |
| ARCE | 12 0800E | 0823D | NO FLARE PATROL | 0811 N14 W75 .961 11987 | 6.7 | 23D -B C | .33 |
| MONT | 12 0806 | 0828 | NO FLARE PATROL | 0811 N15 W78 .973 11987 | 6.5 | 22 -N C | .21 |
| ONDR | 12 0815E | 0842 | NO FLARE PATROL | 0828 N15 W80 .981 11987 | 6.3 | 27D 1F V | 2.10 |
| GRP45254 | 12 0937 | 0946 | NO FLARE PATROL | 0939 N19 E20 .393 11985 | 13.9 | 9 --N | .77 |
| ATHN | 12 0936 | 0945 | NO FLARE PATROL | 0939 N19 E19 .380 11985 | 13.8 | 9 -F 3 C | .66 |
| MONT | 12 0937 | 0949 | NO FLARE PATROL | 0939 N19 E20 .393 11985 | 13.9 | 12 -N C | 1.13 |
| ARCE | 12 0940E | 0945D | NO FLARE PATROL | 0940 N18 E20 .385 11985 | 13.9 | 5D -N C | .60 |
| GRP45258 | 12 1824 | 1831 | NO FLARE PATROL | 1828 N15 W85 .994 11987 | 6.4 | 7 --F | .24 |
| HUAN | 12 1824 | 1830 | NO FLARE PATROL | 1828 N14 W85 .994 11987 | 6.4 | 6 -F 1 C | .21 |
| PALE | 12 1824 | 1831 | NO FLARE PATROL | 1828U N15 W84 .992 11987 | 6.5 | 7 -N 2 C | .27 |
| 259 PALE | 12 1834 | 1845 | NO FLARE PATROL | 1836U S16 W40 .714 11981 | 9.8 | 11 --F 2 C | .36 |
| 260 MITK | 13 0353 | 0435 | NO FLARE PATROL | 0405 N13 W90 1.000 11987 | 6.4 | 42 1N C | 0405 | 1.34 |
| GRP45261 | 13 1221 | 1232 | NO FLARE PATROL | 1222 N17 W90 .999 11987 | 6.8 | 11 -N | .34 |
| CATTA | 13 1220E | 1235 | NO FLARE PATROL | 1220 N18 W90 .999 11987 | 6.8 | 15D -N P | 1220 | .34 |
| MCMA | 13 1222 | 1228 | NO FLARE PATROL | 1223 N16 W90 1.000 11987 | 6.8 | 6 -N C | 1223 |
No confirmed flares as yet reported.
Observatories included in above report:
**July 1972**
- Arcetri
- Capri-S (Sweden)
- Kodaikanal
- Ondrejov
- Capri-F (German)
- Capri-S (Sweden)
- Capri-F (German)
- Capri-S (Sweden)
- Capri-F (German)
- Capri-S (Sweden)
**August 1972**
- Arcetri
- Catania
- Locarno
- Ondrejov
- Capri-S (Sweden)
- Capri-F (German)
- Capri-S (Sweden)
- Capri-S (Sweden)
- Capri-S (Sweden)
- Capri-S (Sweden)
## SURGES AND ACTIVE PROMINENCE REGIONS
### JULY–AUGUST 1972
| Date | Obs. | Phenom. | Begin | End | Lat. Long. | Imp. |
|-------|------|---------|-------|-------|------------|-----|
| July | | | | | | |
| 26 | UCCL | APR | 1021 | 1026 | S05 E90 | 1 |
| | CATA | BSL | 1245E | 1255 | N34 E90 | 1- |
| | ARCE | BSL | 1245 | 1300 | N37 E90 | 1- |
| | ARCE | BSL | 1226E | 1226 | S43 E90 | 1- |
| 27 | CATA | BSL | 0720 | 0745 | N10 E90 | 1 |
| | CATA | BSL | 0815 | 0820 | N19 E90 | 1- |
| | CATA | BSL | 0830 | 0845 | N17 E90 | 1 |
| | CATA | BSL | 1120 | 1300 | S10 E90 | 3 |
| | CANR | APR | 1125 | | S10 E90 | 2 |
| | ARCE | BSL | 1152E | 1305 | S03 E90 | 3+ |
| | ARCE | BSL | 1219E | 1226 | N09 E90 | 1 |
| | ARCE | BSL | 1320 | 1400 | N10 E90 | 1 |
| | ARCE | BSL | 1345 | 1352 | S05 E90 | 1- |
| 28 | KODA | BSL | 0152 | 0540 | N17 E90 | 1 |
| | ATHN | APR | 0408 | 0628 | N13 E90 | 1 |
| | CATA | BSL | 0645E | 0700 | S19 E90 | 1- |
| | CATA | BSL | 0715E | 0725 | S31 E90 | 1- |
| | ARCE | BSL | 0809E | 0905 | N31 E90 | 1- |
| | ARCE | BSL | 0905E | 0925D | S06 E90 | 1- |
| | CAPS | BSL | 0905 | 0920 | S10 E90 | 1 |
| | BUCA | DSD | 1325E | 1358D | S20 E48 | |
| | CAPS | DSD | 1336 | 1353 | S20 E48 | 2 |
| | CATA | BSL | 1405E | 1415 | N10 E90 | 1- |
| | PALE | ADF | 2140 | | S16 E14 | 2 |
| 29 | KODA | BSL | 0145E | 0236 | N15 E90 | 1 |
| | KODA | BSL | 0300 | 0318 | N15 E90 | 1 |
| | KODA | BSL | 0348 | 0405 | N15 E90 | 1 |
| | KODA | BSL | 0522 | 0525 | N15 E90 | 1 |
| | CATA | BSL | 0600 | 0725 | N12 E90 | 1- |
| | KODA | BSL | 0610 | 0655 | N15 E90 | 1 |
| | CAPS | APR | 0618E | 1540 | N12 E90 | 1 |
| | CAPS | ADF | 0715E | 0915D | S18 E36 | 1 |
| | ARCE | BSL | 0819 | 0937 | N13 E90 | 1- |
| | ARCE | BSL | 0844E | 0918D | N06 E90 | 1- |
| | CATA | BSL | 0845 | 0925 | N10 E90 | 1 |
| | ATHN | BSL | 0932 | 1705 | N08 E90 | 1 |
| | CATA | BSL | 1045 | 1055 | N14 E90 | 1- |
| | CATA | BSL | 1135 | 1145 | N11 E90 | 1- |
| | CATA | BSL | 1315E | 1335 | N10 E90 | 1- |
| | CATA | BSL | 1445 | 1505E | N11 E90 | 1- |
| | CATA | BSL | 1455 | 1599 | N10 E90 | 1 |
| 30 | ATHN | BSL | 0443 | 0455 | N10 E80 | 1 |
| | CATA | BSL | 0620 | 0630 | N10 E90 | 1- |
| | ATHN | BSL | 0623 | 0629D | N10 E90 | 1 |
| | ARCE | BSL | 0850 | 0919 | N07 E90 | 1- |
| | ATHN | BSL | 1351E | 1405D | S08 E90 | 1 |
| | CATA | SDF | 1500 | 0515 | N25 E56 | 1 |
| | CATA | SDF | 1500 | 0515 | S10 E63 | 1 |
| | CATA | SDF | 1500 | 0519 | S28 E48 | 1 |
| 31 | PALE | ADF | 0043 | | N13 E23 | 2 |
| | PALE | ADF | 0043 | | N10 E59 | 2 |
| | PALE | ADF | 0043 | | S08 E58 | 2 |
| | ARCE | BSL | 0826 | 0826 | N23 E90 | 1- |
| | ATHN | APR | 0850 | 1120D | N26 E90 | 1 |
| | ARCE | BSL | 0900E | 1000D | N24 E90 | 2 |
| | CANR | APR | 0900 | | N15 E90 | 2 |
| | CATA | SDF | 1005 | 1110 | N33 E24 | 1+ |
| | RAMY | ADF | 1058 | | N22 E09 | 2 |
| | RAMY | APR | 1325 | | S23 E90 | |
| | RAMY | APR | 1325 | | S28 E90 | |
| | PALE | ADF | 1624 | | S04 E40 | 2 |
| | PALE | ADF | 1624 | | N08 E49 | 2 |
| 12 | MITK | BSL | 0349 | 0429 | N29 W90 | 2 |
| | CATA | BSL | 0510E | 0545 | N15 W90 | 1 |
| | CATA | BSL | 0820 | 0900 | N16 W90 | 1- |
| | CATA | BSL | 0915 | 1000 | N16 W90 | 1 |
| | CAPS | BSL | 0920 | 0939 | N15 W90 | 1 |
| | CAPS | BSL | 1055 | 1105 | N16 W90 | 2 |
| | CATA | BSL | 1055 | 1105 | N16 W90 | 2 |
| | CATA | BSL | 1420 | 1435 | N01 W90 | 1- |
| | PALE | EPL | 2022 | | N24 W90 | 2 |
| | BOUL | BSL | 2022 | | N26 W90 | 4 |
| | PALE | APR | 2150 | | S19 W90 | |
| 13 | CAPS | APR | 0602 | 1600 | N15 W90 | 1 |
| | CANR | APR | 0830 | | S15 W90 | 2 |
| | CANR | APR | 1100 | | N05 W90 | 2 |
| 14 | CATA | BSL | 1120 | 1150 | S21 W90 | 1- |
| | BOUL | APR | 1600 | | N12 W90 | 2 |
| | BOUL | APR | 1700 | | S03 W90 | 2 |
**Note:** Only Eastern Hemisphere events are included for July 26-31. Only disk phenomena are included for August 1-8.
**DSD = dark surge on disk**
**BSL = bright surge at limb**
**ADF = active dark filament**
**BSD = bright surge on disk**
**APR = active prominence region**
**EPL = eruptive prominence at limb**
**SDF = sudden disappearance of filament**
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| | | UT | UT | MINUTES | PEAK | | |
| **July 26** | | | | | | | |
| 113 POTS | 41 | 0511.9 | 0512 | 1.1 | 200.0 | 7.0 | |
| 113 POTS | 45 | 0633.8 | 0634.2 | 2.1 | 600.0 | 50.0| |
| 536 ONDR | 8 | 0657.5 | 0657.5 | 1 | 45.0 | | |
| 950 GORK | 1 | 0719.7 | 0719.9 | .4 | 2.6 | 1.3 | |
| 650 GORK | 1 | 0719.7 | 0719.8 | .4 | 2.2 | 1.1 | |
| 113 POTS | 45 | 0931 | 0931.3 | .8 | 100.0 | 20.0| |
| 536 ONDR | 8 | 1018 | 1018 | .5 | 50.0 | | |
| 1500 BERL | 22 | 1425.5 | 1427.7 | 4.8 | 3.0 | 0.9 | |
| 1420 CANR | 21 | 1425 | 1428 | 7.5 | 5.0 | 1.0 | |
| 2800 OTTA | 24 | 1426 | | 2 | 2.0 | | |
| 2800 OTTA | 8 | 1426.5 | 1426.5 | | 4.2 | | |
| 2800 OTTA | 8 | 1427 | 1427 | | 2.8 | | |
| 18 MCMA | 6 | 2014 | 2015 | 4 | | 1 | |
| 18 BOUL | 6 | 2014 | 2017 | 4 | | 2 | |
| **July 27** | | | | | | | |
| 100 GORK | 41 | 0631.9 | 0634.6 | 13 | 500.0 | | |
| 100 GORK | 41 | 0631.9 | 0640.4 | | 50.0 | | |
| 100 GORK | 41 | 0631.9 | 0643.6 | | 90.0D | | |
| 2695 CRON | 3 | 0632.5 | 0634 | 2 | 3.0 | 1.0 | |
| 950 GORK | 1 | 0632.5 | 0635.3 | 4.6 | 2.2 | 1.1 | |
| 200 GORK | 41 | 0632.8 | 0634.3 | 11.5 | 70.0 | | |
| 200 GORK | 41 | 0632.8 | 0639.6 | | 60.0 | | |
| 200 GORK | 41 | 0632.8 | 0643.1 | | 50.0 | | |
| 1420 CRON | 3 | 0633.5 | 0634.5 | 2.5 | 4.0 | 1.0 | |
| 950 GORK | 1 | 0642.6 | 0643.5 | 2.2 | 1.2 | 0.6 | |
| 536 ONDR | 3 | 0745 | 0745 | 2 | 65.0 | | |
| 950 GORK | 1 | 0849.5 | 0849.7 | .9 | 1.2 | 0.6 | |
| 100 GORK | 6 | 0930.2 | 0931.6 | 2.4 | 1000.0 | | |
| 950 GORK | 2 | 0931.4 | 0931.7 | .7 | 3.4 | 1.7 | |
| 200 GORK | 6 | 0931 | 0931.8 | 1.2 | 60.0 | | |
| 536 ONDR | 3 | 1206 | 1206 | 1.5 | 90.0U | | |
| 2800 OTTA | 20 | 2105 | 2110 | 65 | 1.8 | 0.9 | |
| **July 28** | | | | | | | |
| 2695 CRON | 8 | 0121.5 | 0122.5 | 2 | 14.0 | 4.0 | |
| 2695 BOUL | 8 | 0122 | 0124 | 6 | 18.0 | 4.0 | |
| 2695 PENN | 3 | 0122.5 | 0123.3 | 2.5 | 19.0 | 3.4 | |
| 2695 MANI | 3 | 0122.8 | 0124.4 | 2.2 | 13.8 | 3.4 | |
| 1420 CRON | 8 | 0122 | 0123.5 | 2.5 | 23.0 | 9.0 | |
| 1420 BOUL | 8 | 0122.5 | 0124 | 3 | 18.0 | 6.0 | |
| 1415 MANI | 3 | 0122.8 | 0124.4 | 2.6 | 16.0 | 7.0 | |
| 606 MANI | 1 | 0122.8 | 0124.3 | 2.6 | 5.4 | 2.2 | |
| 2800 OTTA | 29 | 0125 | 5 | | 2.0 | 1.0 | |
| 9100 GORK | 20 | 0300.5 | 0306 | 17.8 | 18.0 | 9.0 | |
| 100 GORK | 44 | 0825 | 41 | | | | |
| 7000 SAOP | 4 | 1249.2 | 1249.4 | 5.6 | 6.1 | 3.1 | |
| 2800 OTTA | 21 | 1305 | 1535 | 330 | 3.8 | 2.2 | |
| 2800 OTTA | 40 | 1320 | 1324.5 | 8.5 | 27.0 | | |
| 2700 PENN | 45 | 1320.4 | 1324.5 | 9.6 | 46.1 | 7.3 | |
| 2695 SGMR | 4 | 1320.4 | 1324.4 | 12.2 | 25.7 | 11.8| |
| 2695 CANR | 45 | 1321.5 | 1323.5 | 5.5 | 27.0 | 6.0 | |
| 960 PENN | 45 | 1321 | 1324.2 | 7.2 | 36.5 | 2.9 | |
| 410 SGMR | 6 | 1321.6 | 1321.7 | 8.4 | 11.2 | 4.4 | |
| 245 SGMR | 6 | 1321.5 | 1324.6 | 9.7 | 124.0 | 48.2| |
| 18 MCMA | 6 | 1321 | 1325 | 7 | | | |
| 10700 PENN | 3 | 1322 | 1324.5 | 8.2 | 12.7 | 2.5 | |
| 9500 BERL | 22 | 1322.7 | 1324.6 | 11.3 | 11.0 | 3.4 | |
| 9400 HUAN | 22 | 1322.5 | 1327.8 | 52.2 | 9.6 | 5.7 | |
| 7000 SAOP | 46 | 1322.8 | 1324.7 | 2.7 | 23.5 | 7.1 | |
| 4995 CANR | 4 | 1322 | 1323.5 | 2 | 28.0 | 11.0| |
| 1500 BERL | 46 | 1322.3 | 1324.5 | 10 | 13.0 | 1.9 | |
| 1420 CANR | 45 | 1322.5 | 1324 | 5.5 | 14.0 | 4.0 | |
| 1415 SGMR | 4 | 1322.5 | 1324.5 | 7.3 | 13.8 | 4.9 | |
| 930 BORD | 45 | 1322 | 1324.2 | 6 | 74.0 | 4.0 | |
| 606 SGMR | 40 | 1322 | 1322.3 | 7.4 | 14.9 | 6.0 | |
| 536 ONDR | 45 | 1322 | 1322 | 6.5 | 50.0 | | |
| 23 POTS | 45 | 1322.5 | 1322.8 | 1.2 | 5000.0U | 500.0U| |
| 15400 SGMR | 5 | 1323.3 | 1325.9 | 6.5 | 15.4 | 6.2 | |
| 8800 SGMR | 40 | 1323.3 | 1324.6 | 7.3 | 15.2 | 6.1 | |
| 4995 BOUL | 4 | 1323 | 1324 | 2 | 36.0 | 14.0| |
| 4995 SGMR | 4 | 1323 | 1324.4 | 6.8 | 31.6 | 12.9| |
| 2695 BOUL | 45 | 1323 | 1325 | 6 | 26.0 | 5.0 | |
| 1420 BOUL | 4 | 1323.5 | 1325 | 2.5 | 14.0 | 5.0 | |
| 7000 SAOP | 29 | 1325.5 | 6.9 | | | | |
| 4995 CANR | 3 | 1326.5 | 1327 | 1.5 | 5.0 | 2.0 | |
| 225 HARS | 45 | 1327 | 1328 | 3 | 40.0 | 6.0 | |
| 536 ONDR | 8 | 1347 | 1347 | 1 | 50.0 | | |
| 410 SGMR | 6 | 1352.6 | 1353.1U | 1.4U | 22.4U | 8.5U| |
| 245 SGMR | 6 | 1352.4 | 1352.7U | 1.6U | 66.0U | 26.2U| |
| 113 POTS | 45 | 1352.5 | 1353.2 | 1.4 | 300.0 | 60.0| |
| 23 POTS | 45 | 1352.6 | 1353.2 | 2.1 | 12000.0 | 3000.0| |
| 225 HARS | 45 | 1353 | 1354 | 2 | 50.0 | 10.0| |
| 18 MCMA | 6 | 1353 | 1355 | 4 | | | |
| 9400 HUAN | 20 | 1519.2 | 1528.6 | 23.6 | 13.5 | 2.1 | |
| 245 SGMR | 6 | 1530.9 | 1531.4 | .9 | 11.3 | 3.0 | |
| 18 MCMA | 6 | 1531 | 1533 | 3 | | | |
| 10700 PENN | 1 | 1544.5 | 1545.1 | 4.3 | 8.5 | 1.8 | |
| 2800 OTTA | 20 | 1730 | 1740 | 25 | 1.6 | 0.8 | |
| 4995 CANR | 3 | 1856.5 | 1858 | 2 | 7.0 | 2.0 | |
| 2695 CANR | 3 | 1857 | 1858.5 | 2.5 | 6.0 | 3.0 | |
| 1420 CANR | 3 | 1857 | 1858.5 | 2.5 | 3.0 | 1.0 | |
---
65
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| | | UT | UT | MINUTES | PEAK | | |
| 18 MCMA | 41 | 1857 | 1858 | 5 | | | |
| 18 MCMA | 6 | 1943 | 1945 | 3 | | | |
| 18 BOUL | 41 | 1944 | 1945 | 5 | | | |
| 18 MCMA | 6 | 2016 | 2017 | 2 | | | |
| 18 BOUL | 41 | 2039 | 2042 | 7 | | | |
| 2800 OTTA | 21 | 2040 | 2047 | 30 | 1.6 | 0.8 | |
| 18 MCMA | 41 | 2041 | 2043 | 6 | | | |
| 2800 OTTA | 1 | 2042.5 | 2042.9 | 1 | 2.0 | 1.0 | |
| 2800 OTTA | 21 | 2140 | 2110 | 80 | 4.2 | 2.1 | |
| 2800 OTTA | 1 | 2141 | 2144.2 | 5 | 3.2 | 1.8 | |
| 9400 HUAN | 20 | 2142.9 | 2145 | 8.3 | 9.6 | 4.1 | |
| 2800 OTTA | 8 | 2208.8 | 2208.9 | .4 | 28.0 | | |
| 2700 PENN | 8 | 2208.9 | 2208.9 | .2 | 42.6 | | |
| 960 PENN | 8 | 2208.8 | 2208.9 | .2 | 40.2 | | |
| 2695 CRON | 8 | 2350.5 | 2351 | 1 | 53.0 | 26.0| |
| 8800 MANI | 4 | 2351.7 | 2352.1 | 1.2 | 12.4U | 6.2U| |
| 4995 MANI | 3 | 2351.7 | 2352 | 1.2 | 24.2U | 4.4U| |
| 2695 BOUL | 8 | 2351.5 | 2353.5 | 2 | 53.0 | 17.0| |
| 2695 PENT | 3 | 2351.5 | 2352.1 | 1 | 60.0 | 28.0| |
| 2695 MANI | 4 | 2351.6 | 2352.2 | 1.3 | 63.0 | 14.9| |
| 1420 CRON | 8 | 2351.5 | 2352 | 1 | 11.0 | 4.0 | |
| 1415 MANI | 1 | 2351.2 | 2352.2 | 2 | 7.4 | 3.2 | |
| 606 MANI | 1 | 2351.2 | 2352 | 2 | 4.2 | 1.2 | |
| 1420 BOUL | 8 | 2352.5 | 2353 | 1 | 8.0 | 3.0 | |
| 100 GORK | 6 | 0708.4 | 0708.5 | .4 | 60.0 | | |
| 4995 CANR | 3 | 0732 | 0732.5 | 2 | 7.0 | 3.0 | |
| 2695 CANR | 3 | 0732.5 | 0733 | 2 | 4.0 | 1.0 | |
| 1420 CANR | 3 | 0733 | 0733.5 | 1.5 | 2.0 | 1.0 | |
| 100 GORK | 41 | 0756.4 | 0757.4 | 3 | 60.0 | | |
| 100 GORK | 41 | 0756.4 | 0759.1 | 3 | 60.0D | | |
| 200 GORK | 41 | 0757.2 | 0757.3 | 2.4 | 10.0 | | |
| 200 GORK | 42 | 0812.3 | 0812.5 | 21.1 | 150.0 | | |
| 200 GORK | 200 | 0812.3 | 0824.1 | | 40.0 | | |
| 100 GORK | 6 | 0812 | 0812.7 | 1.8 | 20.0 | | |
| 100 GORK | 41 | 0824 | 0824.1 | 9 | 30.0 | | |
| 100 GORK | 41 | 0824 | 0832.1 | | 60.0D | | |
| 2695 CANR | 3 | 0921 | 0923 | 3.5 | 9.0 | 3.0 | |
| 1500 BERL | 1 | 0922.7 | 0923.7 | 2.8 | 2.0 | 1.0 | |
| 1420 CANR | 3 | 0922.5 | 0923.5 | 2 | 3.0 | 1.0 | |
| 950 GORK | 1 | 0933.3 | 0933.3 | .1 | 2.5 | 1.3 | |
| 650 GORK | 1 | 0933.1 | 0933.4 | .4 | 7.2 | 2.4 | |
| 200 GORK | 6 | 0933.1 | 0933.3 | .4 | 5.0 | | |
| 100 GORK | 6 | 0959.3 | 1000 | 1 U | 40.0 | | |
| 2800 OTTA | 25 | 1200 | | 60 | 4.2 | | |
| 23 POTS | 8 | 1223 | 1223.1 | .2 | 1000.0 | 300.0| |
| 2695 CANR | 8 | 1248.5 | 1248.5 | 1 | 12.0 | 4.0 | |
| 4995 CANR | 3 | 1251.5 | 1252.5 | 1 | 5.0 | 2.0 | |
| 2800 OTTA | 3 | 1251.9 | 1252.9 | 4 | 12.0 | 3.0 | |
| 2700 PENN | 3 | 1251.8 | 1252.9 | 2.6 | 20.6 | 6.3 | |
| 4995 SGMR | 1 | 1252.4 | 1252.8 | 3.2 | 4.9 | 2.0 | |
| 2695 SGMR | 3 | 1252 | 1252.8 | 3 | 14.3 | 6.0 | |
| 1500 BERL | 2 | 1252 | 1252.7 | 2 | 1.8 | 0.8 | |
| 1415 SGMR | 1 | 1252.3 | 1252.9 | 1.4 | .8 | .4 | |
| 536 ONDR | 8 | 1307 E | 1307 | 1 | 60.0 | | |
| 225 HARS | 3 | 1356 | | 3 | 65.0D | | |
| 536 ONDR | 45 | 1426 | 1427.5 | 3 | 55.0 | | |
| 2800 OTTA | 20 | 1505 | 1535 | 130 | 5.8 | 2.9 | |
| 9400 HUAN | 22 | 1514.6 | 1556.2 | 102.7 | 9.5 | 4.3 | |
| 2695 SGMR | 20 | 1516 | 1534.1 | 37.4 | 6.6 | 3.3 | |
| 15400 SGMR | 20 | 1529.2 | 1536.5 | 14.5 | 10.8 | 5.4 | |
| 1415 SGMR | 20 | 1529.6 | 1537.1 | 22.9 | 1.8 | .9 | |
| 8800 SGMR | 20 | 1530.5 | 1532.5 | 22.6 | 6.8 | 3.4 | |
| 4995 SGMR | 20 | 1531 | 1534.4 | 22.6 | 3.9 | 2.0 | |
| 18 MCMA | 6 | 1548 | 1551 | 5 | | | |
| 245 SGMR | 6 | 1549 | 1551.1 | 3.1 | 16.8 | 6.2 | 2 |
| 18 BOUL | 41 | 1810 | 1814 | 8 | | | |
| 8800 SGMR | 20 | 1811.6 | 1815 | 11.5 | 7.5 | 3.0 | |
| 4995 CANR | 3 | 1811.5 | 1812.5 | 1.5 | 6.0 | 2.0 | |
| 2700 PENN | 1 | 1811.9 | 1813.5 | 8 | 8.5 | 2.6 | |
| 18 MCMA | 41 | 1811 | 1814 | 7 | | | |
| 4995 SGMR | 22 | 1812.1 | 1813.5 | 10.5 | 5.6 | 2.0 | |
| 2800 OTTA | 2 | 1812 | 1813.3 | 5 | 4.4 | 1.9 | |
| 2695 SGMR | 20 | 1812 | 1813.5 | 14.5 | 3.9 | 1.5 | |
| 2695 BOUL | 45 | 1812 | 1814 | 5 | 6.0 | 2.0 | |
| 2695 CANR | 45 | 1812 | 1815 | 3.5 | 5.0 | 2.0 | |
| 1420 BOUL | 45 | 1812.5 | 1814 | 5 | 4.0 | 2.0 | |
| 1420 CANR | 45 | 1812 | 1813 | 3.5 | 5.0 | 2.0 | |
| 1415 SGMR | 40 | 1812.4 | 1815.2 | 7.4 | 2.2 | .5 | |
| 606 SGMR | 20 | 1812.2 | 1820.6 | 22 | 5.8 | 2.0 | |
| 245 SGMR | 6 | 1812.6 | 1821.6 | 21.6 | 16.1 | 3.0 | |
| 960 PENN | 1 | 1813.2 | 1815.2 | 5.4 | 3.0 | 1.0 | |
| 410 SGMR | 6 | 1817.8 | 1820.3 | 16.4 | 9.5 | 1.0 | |
| 4995 SGMR | 22 | 1838.7 | 1900 | 38.3 | 8.1 | 4.0 | |
| 2695 SGMR | 23 | 1838.6 | 1900.1 | 52.5 | 6.8 | 3.0 | |
| 18 MCMA | 41 | 1838 | 1846 | 9 | | | |
| 18 BOUL | 41 | 1838 | 1845 | 8 | | | |
| 2800 OTTA | 21 | 1839 | 1900 | 145 | 7.0 | 3.2 | |
---
66
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|
| | | UT | UT | MINUTES | PEAK | MEAN |
| 2800 OTTA | 1 | 1839.7 | 1839.9 | 1 | 4.0 | 2.0 |
| 2700 PENN | 8 | 1839.8 | 1844.7 | 6.4 | 21.4 | 2.1 |
| 2695 BOUL | 8 | 1839.5 | 1840 | 1 | 5.0 | 2.0 |
| 1420 BOUL | 8 | 1839.5 | 1840 | 1 | 11.0 | 3.0 |
| 1415 SGMR | 41 | 1839.3 | 1844.6 | 6.7 | 26.0 | 5.0 |
| 960 PENN | 45 | 1839.2 | 1844.8 | 6.5 | 28.0 | 1.0 |
| 410 SGMR | 6 | 1839.2 | 1841.6 | 6.3 | 59.0 | 8.0 |
| 245 SGMR | 6 | 1839.2 | 1841.6 | 7.4 | 280.0| 40.0 |
| 225 HARS | 45 | 1839 | 1840 | 2 | 60.0 | 25.0 |
| 1420 CANR | 8 | 1840 | 1840.5 | 1 | 13.0 | 5.0 |
| 245 BOUL | 41 | 1840 | 1843 | 7 | | |
| 9400 HUAN | 20 | 1841.6 | 1859.6 | 75.2 | 28.4 | 13.1 |
| 606 SGMR | 40 | 1841.6 | 1844.8 | 4.4 | 35.7 | 8.0 |
| 225 HARS | 45 | 1842 | 1842 | 1 | 65.0 | 20.0 |
| 2695 CANR | 8 | 1843.5 | 1844 | 1 | 22.0 | 10.0 |
| 2800 OTTA | 1 | 1844 | 1844.5 | 2 | 4.0 | 2.0 |
| 2800 OTTA | 8 | 1844.6 | 1844.6 | | 17.0 | |
| 2695 SGMR | 4 | 1844 | 1844.6 | 1.4 | 20.4 | 5.0 |
| 2695 BOUL | 8 | 1844 | 1845 | 1.5 | 10.0 | 3.0 |
| 1420 BOUL | 8 | 1844 | 1845 | 2 | 23.0 | 8.0 |
| 1420 CANR | 8 | 1844 | 1844.5 | 1 | 29.0 | 10.0 |
| 225 HARS | 45 | 1844 | 1845 | 4 | 55.0 | 35.0 |
| 8800 SGMR | 22 | 1848.1 | 1859.4 | 29.1 | 23.8 | 10.0 |
| 10700 PENN | 20 | 1850.7 | 1859.6 | 34.3 | 20.2 | 5.9 |
| 15400 SGMR | 20 | 1851 | 1859.5 | 20.6 | 34.5 | 12.0 |
| 2700 PENN | 20 | 1852.1 | 1859.9 | 28.3 | 8.6 | 3.5 |
| 245 SGMR | 43 | 1909.8 | 1933.6 | 44.8 | 22.4 | |
| 245 SGMR | 6 | 2159.5 | 2200.3 | 1.6 | 20.0 | 4.0 |
| 2800 OTTA | 20 | 2220 | 2225 | 25 | 2.0 | 1.0 |
| 10700 PENN | 3 | 2225.8 | 2228.5 | 6 | 11.3 | 4.9 |
### Additional Data:
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|
| 9100 GORK | 20 | 0225.3 | 0256.1 | 45.3 | 128.0 | 52.0 |
| 100 GORK | 6 | 0305.7 | 0305.9 | 0.4 | 70.0D | |
| 100 GORK | 41 | 0326.8 | 0328.2 | 8.6 | 70.0 | |
| 100 GORK | 41 | 0416.2 | 0416.3 | 4.8 | 70.0 | |
| 100 GORK | 41 | 0416.2 | 0419.9 | | 70.0D | |
| 2695 CRON | 41 | 0419 | 0419.5 | 1.5 | 10.0 | 4.0 |
| 200 GORK | 6 | 0419.5 | 0419.9 | 1.2 | 80.0 | |
| 113 POTS | 45 | 0419.2 | 0420.2 | 1.7 | 200.0 | 25.0 |
| 100 GORK | 6 | 0607.7 | 0607.8 | 3 | 40.0 | |
| 536 ONDR | 3 | 0707.5 | 0707.5 | 2 | 50.0 | |
| 606 MANI | 41 | 0709.5 | 0717.4 | 11.6 | 14.5 | 2.5 |
| 4995 CANR | 3 | 0711 | 0711.5 | 2 | 9.0 | 3.0 |
| 2695 CANR | 3 | 0711 | 0712 | 2 | 6.0 | 2.0 |
| 200 GORK | 41 | 0712.9 | 0716.5 | 11.4 | 300.0D| |
| 200 GORK | 41 | 0712.9 | 0719.9 | | 300.0 | |
| 234 POTS | 41 | 0715.8 | 0716.5 | 8.4 | 450.0 | 3.0 |
| 113 POTS | 41 | 0715.8 | 0717.2 | 8.4 | 4200.0| 80.0 |
| 100 GORK | 41 | 0715 | 0716.5U | 9.4 | 60.0D | |
| 100 GORK | 41 | 0715 | 0720.2 | | 200.0 | |
| 100 GORK | 41 | 0715 | 0724.2 | | 700.0 | |
| 23 POTS | 41 | 0715.4 | 0717.3 | 9.2 | 8000.0| 800.0|
| 950 GORK | 41 | 0716.2 | 0716.4 | 5.2 | 2.2 | |
| 950 GORK | 41 | 0716.2 | 0717.1 | | 3.4 | |
| 950 GORK | 41 | 0716.2 | 0719.7 | | 2.4 | |
| 950 GORK | 41 | 0716.2 | 0720.7 | | 2.9 | |
| 225 HARS | 45 | 0716 | 0717 | 3 | 70.0 | 15.0 |
| 650 GORK | 3 | 0717 | 0717.2 | 0.2 | 22.0 | 10.7 |
| 536 ONDR | 8 | 0717.5 | 0717.5 | 1 | 45.0 | |
| 650 GORK | 41 | 0719.4 | 0720 | 1.6 | 2.4 | |
| 650 GORK | 41 | 0719.4 | 0720.8 | | 3.6 | |
| 100 GORK | 41 | 0835.7 | 0837 | 5.7 | 60.0 | |
| 100 GORK | 41 | 0835.7 | 0840.8 | | 80.0 | |
| 200 GORK | 6 | 0836 | 0836.9 | 1.5 | 20.0 | |
| 100 GORK | 41 | 0853.4 | 0854.1 | 1.9 | 70.0 | |
| 100 GORK | 41 | 0853.4 | 0855 | | 40.0 | |
| 536 ONDR | 8 | 0928 | 0928 | 1 | 50.0 | |
| 100 GORK | 42 | 0932 | 0932.5 | 1.5 | 40.0 | |
| 245 SGMR | 6 | 1100.9 | 1101.1 | 0.4 | 24.0 | 6.0 |
| 10700 PENN | 1 | 1238.1 | 1240.2 | 6.6 | 8.1 | 1.0 |
| 245 SGMR | 6 | 1307.5 | 1308.1 | 3.5 | 6.9 | 1.5 |
| 2800 OTTA | 21 | 1310 | 1325 | 90 | 4.4 | 2.0 |
| 9400 HUAN | 20 | 1313.7 | 1323.7 | 71.2 | 24.2 | 8.7 |
| 7000 SAOP | 22 | 1319.1 | 1324.5 | 21.5 | 9.0 | 4.0 |
| 4995 BOUL | 21 | 1320 | 1324.5 | 6.7 | 18.0 | 8.0 |
| 15400 SGMR | 3 | 1321.9 | 1325.1 | 6.7 | 18.0 | 8.0 |
| 10700 PENN | 1 | 1321.9 | 1325.9 | 9.6 | 8.1 | 4.9 |
| 9500 BERL | 22 | 1321.2 | 1323.7 | 39 U | 12.0 | 6.0 |
| 8800 SGMR | 3 | 1321.3 | 1324.8 | 8.4 | 13.8 | 5.0 |
| 4995 CANR | 45 | 1321 | 1324 | 9.5 | 9.0 | 3.0 |
| 4995 SGMR | 4 | 1321.5 | 1324 | 8.3 | 11.2 | 5.0 |
| 2695 SGMR | 2 | 1321.5 | 1325.2 | 6.5 | 9.3 | 4.0 |
| 2695 CANR | 21 | 1321.5 | 1324.5 | 9.5 | 5.0 | 2.0 |
| 1500 BERL | 20 | 1321.5U | 1324.7 | 8.5U | 1.7 | 0.7 |
| 2695 BOUL | 3 | 1323.5 | 1325 | 4.5 | 4.0 | 1.0 |
| 2800 OTTA | 8 | 1325 | 1325.3 | 1 | 8.4 | |
| 2800 OTTA | 20 | 1500 | 1640 | 140 | 3.4 | 1.7 |
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| 9400 HUAN | 22 | 1530.4 | 1555.6 | 105.2 | 11.1 | 5.6 | |
| 18 MCMA | 41 | 1701 | 1705 | 6 | | | |
| 18 BOUL | 41 | 1701 | 1703 | 6 | | | |
| 10700 PENN | 1 | 1722.7 | 1723.2 | 5.8 | 6.7 | 0.7 | |
| 2800 OTTA | 32 | 1815 | 1912 | 95 | -3.6 | -1.8| |
| 245 SGMR | 6 | 1837.4 | 1839 | 5.3 | 110.0 | 27.0| |
| 18 MCMA | 6 | 1837 | 1840 | 5 | | | |
| 18 BOUL | 6 | 1837 | 1840 | 4 | | | |
| 225 HARS | 45 | 1839 | 1840 | 4 | 70.0 | 20.0| |
| 9400 HUAN | 20 | 1846.2 | 1854.8 | 18.1 | 7.4 | 1.9 | |
| 18 MCMA | 6 | 1857 | 1859 | 3 | | | |
| 18 MCMA | 6 | 1934 | 1935 | 3 | | | |
| 18 BOUL | 6 | 1934 | 1936 | 2 | | | |
| 18 MCMA | 42 | 2019 | 2028 | 16 | | | |
| 18 BOUL | 42 | 2019 | 2034 | 15 | | | |
| 245 SGMR | 6 | 2032.5 | 2034.2 | 2.5 | 90.0 | 23.0| |
| 10700 PENN | 3 | 2238.6 | 2239 | 7.4 | 13.4 | 2.1 | |
| 245 SGMR | 6 | 2248.4 | 2248.8 | 1.9 | 41.0 | 10.0| |
| 9100 GORK | 20 | 0346.5 | 0359.9 | 27 | 37.0 | 19.0| |
| 200 GORK | 41 | 0409.8 | 0409.9 | 9.6 | 80.0 | | |
| 200 GORK | 41 | 0409.8 | 0416.9 | 7 | 70.0 | | |
| 100 GORK | 41 | 0409.6 | 0409.7 | 16.5 | 10.0 | | |
| 100 GORK | 41 | 0409.6 | 0416.7 | 7 | 50.0 | | |
| 100 GORK | 41 | 0409.6 | 0425.5 | 1 | 40.0 | | |
| 100 GORK | 41 | 0441.6 | 0441.7 | 2.4 | 50.0 | | |
| 100 GORK | 41 | 0441.6 | 0443.7 | 2 | 20.0 | | |
| 9100 GORK | 20 | 0531.3 | 0535.7 | 21 | 13.0 | 6.0 | |
| 4995 CRON | 3 | 0532 | 0536 | 7 | 9.0 | 4.0 | |
| 100 GORK | 6 | 0611.6 | 0611.8 | 1.4 | 60.0 | | |
| 536 ONDR | 8 | 0626.5 | 0626.5 | 1 | 60.0 | | |
| 100 GORK | 41 | 0629.2 | 0629.3 | 4.6 | 45.0 | | |
| 100 GORK | 41 | 0629.2 | 0631.2 | 2 | 40.0 | | |
| 100 GORK | 41 | 0642.9 | 0643.2 | 3.7 | 50.0D | | |
| 200 GORK | 6 | 0644.7 | 0645.1 | 1 | 50.0 | | |
| 9100 GORK | 20 | 0658.3 | 0700.8 | 8.1 | 16.0 | 7.4 | |
| 100 GORK | 6 | 0736.7 | 0737 | 0.7 | 50.0 | | |
| 200 GORK | 6 | 0812.2 | 0812.4 | 0.6 | 15.0 | | |
| 100 GORK | 6 | 0812 | 0812.2 | 1.2 | 60.0D | | |
| 100 GORK | 41 | 1028.3 | 1028.8 | 22.6 | 50.0 | | |
| 100 GORK | 41 | 1028.3 | 1037.3 | 5 | 350.0 | | |
| 100 GORK | 41 | 1028.3 | 1047 | 1 | 700.0 | | |
| 200 GORK | 6 | 1046.7 | 1046.9 | 0.9 | 250.0D | | |
| 15400 SGMR | 23 | 1058 | 1141.5 | 73 | 50.0 | 24.0| |
| 100 GORK | 44 | 1058 | 124 D | 1 | 5.0 | | |
| 245 SGMR | 43 | 1108.7 | 1140.3 | 77.3 | 79.0 | | |
| 200 GORK | 44 | 1110 | 1110 D | 1 | 5.0 | | |
| 4995 CANR | 3 | 1059.5 | 1101 | 3.5 | 9.0 | 3.0 | |
| 15400 SGMR | 3 | 1100 | 1100.1 | 0.7 | 64.0 | 16.0| |
| 9100 GORK | 4 | 1100.3 | 1101.6 | 8.2 | 39.0 | 5.5 | |
| 8800 SGMR | 23 | 1100.2 | 1101.7 | 38.8 | 21.7 | 9.0 | |
| 4995 SGMR | 23 | 1100.3 | 1118.7 | 41 | 8.5 | 3.5 | |
| 2950 GORK | 21 | 1100.6 | 1116.5 | 111.7 | 17.5 | 5.6 | |
| 2695 SGMR | 21 | 1100 | 1120.3 | 41.5 | 9.2 | 4.0 | |
| 2695 CANR | 3 | 1100.5 | 1101.5 | 1.5 | 4.0 | 2.0 | |
| 2950 GORK | 1 | 1101.3 | 1102.3 | 1.5 | 4.8 | 4.2 | |
| 9100 GORK | 29 | 1102.3 | 1102.3 | 6.2 | 14.0 | 4.7 | |
| 1415 SGMR | 23 | 1104.9 | 1125.5 | 36.1 | 5.4 | 2.0 | |
| 4995 CANR | 45 | 1109.5 | 1110.5 | 12 | 36.0 | 17.0| |
| 35000 SGMR | 3 | 1110.7 | 1112.2 | 1.9 | 57.0 | 16.0| |
| 15400 SGMR | 3 | 1110.6 | 1111.8 | 4.5 | 64.0 | 18.0| |
| 9500 BERL | 4 | 1110 | 1112 | 80 U | 110.0 | | |
| 9100 GORK | 4 | 1110.7 | 1112.1 | 32.1 | 130.0 | 16.0| |
| 8800 SGMR | 4 | 1110.7 | 1111.9 | 7.3 | 145.0 | 36.0| |
| 4995 SGMR | 46 | 1110.6 | 1112 | 8.1 | 53.0 | 13.0| |
| 4995 SGMR | 46 | 1110.6 | 1114 | 8.1 | 53.0 | 13.0| |
| 2950 GORK | 45 | 1110.9 | 1112.4 | 5.6 | 95.0 | 30.0| |
| 2695 CANR | 1 | 1110.5 | 1115 | 11.5 | 62.0 | 21.0| |
| 2695 SGMR | 4 | 1110.6 | 1112 | 7.1 | 62.0 | 16.0| |
| 1500 BERL | 4 | 1110 | 1112.2 | 100 | 29.0 | | |
| 1420 CANR | 1 | 1110 | 1112 | 7.5 | 26.0 | 9.0 | |
| 1415 SGMR | 4 | 1110.6 | 1112.2 | 7.1 | 20.9 | 5.0 | |
| 930 BORD | 45 | 1110 | 1110.8 | 8 | 8.0 | 2.0 | |
| 950 GORK | 4 | 1111 | 1112 | 22.9 | 7.6 | 2.7 | |
| 650 GORK | 2 | 1111 | 1112.2 | 12.3 | 3.1 | 1.8 | |
| 606 SGMR | 1 | 1111.2 | 1111.7 | 1.4 | 2.5 | 1.0 | |
| 650 GORK | 29 | 1113 | 1113 | 10.3 | 1.9 | 1.3 | |
| 9100 GORK | 29 | 1115 | 1115 | 27.8 | 40.0 | 13.0| |
| 950 GORK | 29 | 1115 | 1115.1 | 18.9 | 3.8 | 1.5 | |
| 2950 GORK | 29 | 1116.5 | 1116.5 | 95.8 | 17.5 | 5.5 | |
| 15400 SGMR | 3 | 1140 | 1140.5 | 0.8 | 62.0 | 16.0| |
| 15400 SGMR | 4 | 1155.9 | 1159.1 | 6.9 | 134.0 | 34.0| |
| 10700 PENN | 45 | 1157.9 | 1159.2 | 3 | 45.8 | 16.6| |
| 35000 SGMR | 3 | 1158.4 | 1159.3 | 1.9 | 76.0 | 19.0| |
| 2695 CANR | 8 | 1200.5 | 1201.5 | 1 | 4.0 | 1.0 | |
| 9100 GORK | 1 | 1204.8 | 1205 | 0.5 | 24.0 | 12.0| |
| 100 GORK | 6 | 1224 | 1224.2 | 0.5 | 50.0D | | |
68
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| 9500 BERL | 20 | 1233 U | 1346 | 121 U | 16.0 | | |
| 9400 HUAN | 20 | 1312.7 | 1345.9 | 52.2 | 16.8 | | |
| 2800 OTTA | 26 | 1325 | | 35 | 3.5 | | |
| 15400 SGMR | 3 | 1344.2 | 1346 | 3.4 | 53.0 | | |
| 10700 PENN | 1 | 1345.1 | 1346.2 | 2.4 | 8.1 | | |
| 15400 SGMR | 3 | 1351.6 | 1351.8 | 0.6 | 17.8 | | |
| 2800 OTTA | 32 | 1410 | 1500 | 110 | -3.6 | | |
| 536 ONDR | 3 | 1436.5 | 1436.5 | 1.5 | 70.0 | | |
| 9400 HUAN | 22 | 1445.9 | 1447.9 | 35.8 | 11.2 | | |
| 15400 SGMR | 4 | 1446.9 | 1447.7 | 5.1 | 77.0 | | |
| 9500 BERL | 1 | 1446.7 | 1447.7 | 4.3 | 14.0 | | |
| 10700 PENN | 3 | 1447 | 1447.9 | 3.4 | 23.3 | | |
| 8800 SGMR | 1 | 1447.5 | 1448 | 2.3 | 7.7 | | |
| 15400 SGMR | 30 | 1452 | 1452 | 8.2 | 7.1 | | |
| 15400 SGMR | 3 | 1453.9 | 1454.1 | 0.5 | 24.9 | | |
| 35000 SGMR | 3 | 1454 | 1454.2 | 0.4 | 72.0 | | |
| 15400 SGMR | 23 | 1502.2 | 1506.3 | 11.3 | 18.5 | | |
| 10700 PENN | 1 | 1506 | 1507.9 | 3.1 | 6.3 | | |
| 35000 SGMR | 3 | 1507.5 | 1507.9 | 0.6 | 72.0 | | |
| 15400 SGMR | 3 | 1507.4 | 1507.7 | 0.6 | 47.6 | | |
| 15400 SGMR | 3 | 1615.9 | 1616.5 | 1.4 | 21.0 | | |
| 10700 PENN | 3 | 1622.1 | 1622.2 | 2.8 | 12.7 | | |
| 18 MCMMA | 6 | 1636 | | | | | |
| 10700 PENN | 20 | 1703.1 | 1708.2 | 22 | 12.7 | | |
| 10700 PENN | 3 | 1747.5 | 1748 | 6 | 10.6 | | |
| 10700 PENN | 3 | 1900 E | 1903 | 6 E | 12.0D | | |
| 15400 SGMR | 3 | 1902.1 | 1903.1 | 4.7 | 24.4 | | |
| 18 MCMMA | 6 | 1927 | | | | | |
| 9400 HUAN | 20 | 2017.8 | 2029.4 | 44.2 | 17.7 | | |
| 10700 PENN | 20 | 2022.6 | 2029.2 | 13.4 | 12.7 | | |
| 9400 HUAN | 20 | 2126.2 | 2128.6 | 16.8 | 19.4 | | |
| 10700 PENN | 3 | 2128 | 2128.7 | 4.9 | 19.4 | | |
| 10700 PENN | 1 | 2136.4 | 2137.1 | 3.2 | 6.3 | | |
**August**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| 2695 PENT | 45 | 0135 | 0147 | 20 D | 7.2 | | |
| 113 POTS | 45 | 0426.5 | 0427.9 | 13.5 | 700.0 | | |
| 23 POTS | 45 | 0426.5 | 0428.2 | 6 | 5000.0 | | |
| 9500 BERL | 21 | 0457 U | 0610 U | 380 U | 32.0 | | |
| 9500 BERL | 4 | 0656 U | 0658.5 | 47 U | 249.0 | | |
| 9500 BERL | 23 POTS | 0723 E | 0723 | | 61.0 | | |
| 9500 BERL | 8 | 0745.3 | 0745.4 | 0.4 | 2000.0 | | |
| 9500 BERL | 4 | 0838 | 0840.7 | 12 | 126.0 | | |
| 1420 CANR | 3 | 0838.5 | 0839.5 | 6.5 | 4.0 | | |
| 1500 BERL | 1 | 0839 | 0840 | 2.3 | 3.2 | | |
| 234 POTS | 45 | 0839.4 | 0839.6 | 0.6 | 2000.0 | | |
| 23 POTS | 45 | 0839.2 | 0839.8 | 2.7 | 20000.0 | | |
| 9500 BERL | 22 | 0842 | 0925.5 | 9.4 | 110.0 | | |
| 23 POTS | 41 | 0907.2 | 0907.4 | 1.3 | 4000.0 | | |
| 4995 CANR | 3 | 0954 | 0956 | 3 | 4.0 | | |
| 9500 BERL | 20 | 1032 | 1034.5 | 19 | 27.0 | | |
| 930 BORD | 45 | 1048 | 1049.3 | 4 | 31.0 | | |
| 9500 BERL | 22 | 1129 | 1150 | 38 | 24.0 | | |
| 4995 CANR | 3 | 1129 | 1136.5 | 18.5D | 12.0 | | |
| 9400 HUAN | 20 | 1146.6 | 1149.5 | 67.4 | 36.3 | | |
| 4995 CANR | 21 | 1147.5 | 1148.5 | 29 | 27.0 | | |
| 2695 CANR | 3 | 1147.5 | 1150 | 20 | 70.0 | | |
| 2695 SGMR | 3 | 1147.5 | 1149.5 | 7.8 | 79.0 | | |
| 1420 CANR | 3 | 1147.5 | 1149.5 | 5.5 | 29.0 | | |
| 410 SGMR | 6 | 1147.9 | 1149.2 | 3.6 | 100.0 | | |
| 245 SGMR | 6 | 1147.6 | 1148.9 | 5.4 | 180.0 | | |
| 15400 SGMR | 20 | 1148.5 | 1149.8 | 10 | 14.0 | | |
| 8800 SGMR | 4 | 1148.6 | 1149.7 | 7.8 | 22.0 | | |
| 7000 SAOP | 3 | 1148.7 | 1149.6 | 1.5 | 25.9 | | |
| 4995 SGMR | 4 | 1148.5 | 1149.5 | 8.7 | 33.0 | | |
| 2800 OTTA | 3 | 1148 | 1149.2 | 4 | 60.0 | | |
| 1500 BERL | 4 | 1148 | 1149.5 | 4.5 | 25.0 | | |
| 1415 SGMR | 4 | 1148.4 | 1149.5 | 5.6 | 22.0 | | |
| 606 SGMR | 4 | 1148.4 | 1149.2 | 4.2 | 18.0 | | |
| 234 POTS | 45 | 1148.7 | 1148.7 | 0.6 | 250.0 | | |
| 113 POTS | 45 | 1148.2 | 1149 | 2.9 | 6500.0 | | |
| 23 POTS | 45 | 1148.3 | 1149.5 | 4.1 | 50000.0 | | |
| 7000 SAOP | 29 | 1150.2 | | | | | |
| 2800 OTTA | 29 | 1152 | | | | | |
| 410 SGMR | 6 | 1210.4 | 1210.5 | 0.3 | 5.4 | | |
| 245 SGMR | 6 | 1210.2 | 1210.4 | 0.7 | 29.0 | | |
| 10700 PENN | 3 | 1229.7 | 1236.9 | 35.7 | 37.8 | | |
| 9500 BERL | 20 | 1245 | 1305 | 76 | 24.0 | | |
| 9400 HUAN | 20 | 1246.4 | 1304.8 | 31.9 | 23.6 | | |
| 2700 PENN | 45 | 1248.1 | 1249.5 | 4.1 | 86.4 | | |
| 960 PENN | 45 | 1248.5 | 1249.5 | 4.9 | 17.0 | | |
| 10700 PENN | 20 | 1249.9 | 1303.8 | 26.8 | 14.7 | | |
| 245 SGMR | 6 | 1306.4 | 1306.8 | 0.5 | 6.6 | | |
| 113 POTS | 8 | 1306.5 | 1306.6 | 0.5 | 850.0 | | |
| 23 POTS | 45 | 1306.5 | 1306.7 | 0.7 | 8000.0 | | |
| 2800 OTTA | 20 | 1330 | 1345 | 60 | 2.2 | | |
| 245 SGMR | 43 | 1410 | 1920.5 | 588 D | 30.4 | | |
| 10700 PENN | 3 | 1444.9 | 1457.6 | 23.6 | 26.4 | | |
| 9500 BERL | 22 | 1446 | 1454 | 30 | 19.0 | | |
| 8800 SGMR | 20 | 1450.2 | 1454 | 18.5 | 15.0 | | |
| 15400 SGMR | 46 | 1451.1 | 1457.6 | 16.3 | 73.0 | | |
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 – AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME (UT) | TIME OF MAXIMUM (UT) | DURATION MINUTES | FLUX DENSITY $10^{-22} \text{Wm}^{-2} \text{Hz}^{-1}$ |
|------------------|------|-------------------|---------------------|-----------------|--------------------------------------------------|
| | | | | | PEAK |
| | | | | | MEAN |
| 10700 PENN | 3 | 1523.6 | 1532.1 | 41.1 | 46.7 |
| -9500 BERL | 22 | 1523 | 1532 | 30 | 32.0 |
| -8800 SGMR | 20 | 1523.7 | 1532 | 24 | 37.0 |
| -15400 SGMR | 46 | 1524.8 | 1532 | 22.6 | 48.0 |
| -9400 HUAN | 3 | 1530.4 | 1532.3 | 15.7 | 29.1 |
| 2800 OTTA | 20 | 1530 | 1545 | 75 | 2.8 |
| 113 POTS | 45 | 1536.6 | 1537.6 | 0.8 | 700.0 |
| 15400 SGMR | 45 | 1613.3 | 1614.3 | 14.3 | 24.0 |
| -15400 SGMR | 45 | 1613.3 | 1616.2 | 14.3 | 24.0 |
| -10700 PENN | 20 | 1613.5 | 1614.4 | 12.7 | 9.3 |
| -8800 SGMR | 1 | 1613.9 | 1616.8 | 9.9 | 7.2 |
| 15400 SGMR | 3 | 1628.1 | 1628.3 | 0.9 | 29.4 |
| 10700 PENN | 3 | 1653.2 | 1658.3 | 32.9 | 46.7 |
| -15400 SGMR | 3 | 1655.5 | 1658.3 | 26.5 | 106.1 |
| -9400 HUAN | 20 | 1657 | 1658.2 | 18.7 | 72.2 |
| 2800 OTTA | 22 | 1915.5 | 1918 | 102.6 | 11.9 |
| -2695 SGMR | 20 | 1907.3 | 1843 | 16.1 | 21.8 |
| -9400 HUAN | 20 | 1811.2 | 1821.9 | 10.9 | 19.5 |
| -15400 SGMR | 3 | 1821.7 | 1821.9 | 4.2 | 19.4 |
| -10700 PENN | 3 | 1821.6 | 1821.9 | 4.2 | 19.4 |
| -8800 SGMR | 3 | 1821.4 | 1822 | 1.5 | 12.6 |
| 4995 SGMR | 1 | 1821.7 | 1821.9 | 6.4 | 3.8 |
| 2700 PENN | 3 | 1825.1 | 1843.1 | 20.6 | |
| 1415 SGMR | 20 | 1834.9 | 1843.1 | 12.6 | 1.9 |
| -10700 PENN | 20 | 1835.4 | 1841.8 | 14.4 | 12.2 |
| -9400 HUAN | 20 | 1835.1 | 1843 | 20.8 | 23.6 |
| -8800 SGMR | 20 | 1835.6 | 1842.9 | 12.6 | |
| -15400 SGMR | 20 | 1836.8 | 1841.6 | 10.7 | |
| 4995 SGMR | 1 | 1842.4 | 1842.9 | 9.9 | 10.3 |
| 960 PENN | 1 | 1842.4 | 1843 | 1.6 | 2.6 |
| 9400 HUAN | 20 | 1908.2 | 1917.2 | 27.2 | 18.2 |
| 2800 OTTA | 21 | 2110 | 2145 | 85 | 2.4 |
| 4995 BOUL | 3 | 2115 | 2117 | 4.5 | 16.0 |
| 1415 SGMR | 1 | 2118.8 | 2119.5 | 3.5 | 6.8 |
| 960 PENN | 1 | 2118.5 | 2119.5 | 2.2 | 4.9 |
| 606 SGMR | 1 | 2118.3 | 2119.1 | 1.7 | 2.4 |
| 410 SGMR | 6 | 2118.7 | 2123.8 | 8.6 | |
| 245 SGMR | 6 | 2118.4 | 2119.3 | 6.7 | |
| 2800 OTTA | 1 | 2119 | 2119.5 | 2 | 4.6 |
| 2700 PENN | 1 | 2119.3 | 2119.5 | 1.6 | 9.2 |
| 2695 BOUL | 8 | 2119 | 2120 | 2 | 5.0 |
| 2695 SGMR | 1 | 2119.3 | 2119.5 | 0.7 | 4.5 |
| 1420 BOUL | 21 | 2119 | 2120 | 9.5 | 10.0 |
| 15400 SGMR | 3 | 2215.5 | 2216.9 | 6.6 | 46.3 |
| -10700 PENN | 3 | 2215.7 | 2217 | 7.1 | 40.3 |
| -9400 HUAN | 3 | 2215.9 | 2216.8 | 3.2 | 29.6 |
| 2695 PENT | 20 | 2240 | 2325 | 85 | 4.4 |
2
| 2695 PENT | 21 | 0015 | 0130 | 100 | 13.0 |
| 8800 MANI | 3 | 0139.5U | 0140.5 | 7.7U | 39.8 |
| 4995 MANI | 3 | 0139.5U | 0140.5 | 6 U | 12.2 |
| 2695 MANI | 1 | 0139.7U | 0140.4 | 2.6U | 5.4 |
| 2695 PENT | 2 | 0139.8 | 0140.4 | 1.2 | 7.2 |
| 4995 CRON | 47 | 0305 | 0405 | 163.5 | 1453.0 |
| 2695 CRON | 47 | 0305.5 | 0405 | 202 | 1833.0 |
| 8800 MANI | 47 | 0309.5U | 0330.3 | 63.1U | 1750.0 |
| 4995 MANI | 47 | 0309.5U | 0404.5 | 62.4U | 2200.0 |
| 2695 MANI | 47 | 0311.2U | 0404.8 | 60.7U | 980.0 |
| 1415 MANI | 47 | 0312.4U | 0406.8 | 59.5U | 1060.0 |
| 606 MANI | 47 | 0312.4U | 0340.5 | 90.2U | 3000.0 |
| 234 POTS | 45 | 0351 | 0351 | U | 200.0 |
| 1420 CRON | 47 | 0359 | 0407.5 | 242 | 986.0 |
| 9500 BERL | 46 | 0400 | 0404 | 360 | 2120.0 |
| 1500 BERL | 46 | 0400 | 0404 | 330 | 1260.0 |
| 113 POTS | 45 | 0410 | 0410 | U | 700.0 |
| 4995 MANI | 29 | 0411.9 | 0411.9 | 164.8U | 820.0 |
| 2695 MANI | 29 | 0411.9 | 0411.9 | 176.1U | 880.0 |
| 1415 MANI | 29 | 0411.9 | 0411.9 | 151.4U | 606.0 |
| 606 MANI | 29 | 0442.6 | 0442.6 | 117.2U | 620.0 |
| 410 SGMR | 44 | 0941 | E | 897 | D |
| 245 SGMR | 44 | 0941 | E | 897 | D |
| 4995 CANR | 21 | 1041.5 | 1044.5 | 27.5 | 25.0 |
| 2695 CANR | 21 | 1043.5 | 1045.5 | 14.5 | 39.0 |
| 15400 SGMR | 3 | 1044.6 | 1045.3 | 9.4 | 38.0 |
| 9500 BERL | 4 | 1044 | 1045 | 8 U | 72.0 |
| 2800 OTTA | 4 | 1044.7 | 1045 | 2 | 30.0 |
| 1500 BERL | 46 | 1044 | 1045.2 | 54 U | 26.0 |
| 1420 CANR | 45 | 1044.5 | 1045.5 | 5 | 29.0 |
| 1415 SGMR | 46 | 1045.4 | 1045.4 | 6.9 | 25.0 |
| 930 BORD | 45 | 1046 | 1048 | 3 | 92.0 |
| 606 SGMR | 1 | 1045 | 1045 | 3.7 | 4.2 |
| 2800 OTTA | 29 | 1046 | 110 | 50 | 2.4 |
| 2800 OTTA | 20 | 1310 | 50 | 2.4 | 1.2 |
| 2800 OTTA | 20 | 1340 | 57 | 4.4 | 1.2 |
| 930 BORD | 45 | 1240 | 1310 | 50 | 2.4 |
| 606 SGMR | 3 | 1429.6 | 1430.2 | 3 | 15.0 |
| 410 SGMR | 7 | 1429.4 | 1430.2 | 2.6 | 310.0 |
| 113 POTS | 45 | 1429.7 | 1430.5 | 1.2 | 300.0 |
| 2800 OTTA | 22 | 1450 | 1525 | 65 | 2.4 |
| 245 SGMR | 6 | 1521 | 1525.2 | 18 | 110.0 |
70
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME UT | TIME OF MAXIMUM UT | DURATION MINUTES | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|------------------|--------------------|------------------|---------------------------------------------|-----|---------|
| | | | | | PEAK | | |
| | | | | | MEAN | | |
- **606 SGMR**
- **1500 BERL**
- **1415 SGMR**
- **930 BORD**
- **410 SGMR**
- **245 BOUL**
- **245 BOUL**
- **1420 CANR.**
- **1420 BOUL**
- **23 POTS**
- **9400 HUAN**
- **15400 SGMR**
- **8800 SGMR**
- **2800 OTTA**
- **9400 HUAN**
- **2800 OTTA**
- **245 SGMR**
- **410 SGMR**
- **113 POTS**
- **9400 HUAN**
- **9400 HUAN**
- **9400 HUAN**
- **9400 HUAN**
- **15400 SGMR**
- **4995 CANR**
- **4995 BOUL**
- **2695 SGMR**
- **35000 SGMR**
- **10700 PENN**
- **8800 SGMR**
- **4995 SGMR**
- **2800 OTTA**
- **2700 PENN**
- **2695 CANR**
- **2695 BOUL**
- **1420 CANR**
- **1420 BOUL**
- **1415 SGMR**
- **960 PENN**
- **606 SGMR**
- **960 PENN**
- **2700 PENN**
- **15400 SGMR**
- **8800 SGMR**
- **4995 SGMR**
- **2800 OTTA**
- **1415 SGMR**
- **2695 SGMR**
- **15400 SGMR**
- **2695 BOUL**
- **8800 SGMR**
- **4995 SGMR**
- **2800 OTTA**
- **2695 SGMR**
- **1420 BOUL**
- **1415 SGMR**
- **606 SGMR**
- **8800 SGMR**
- **15400 SGMR**
- **1415 SGMR**
- **4995 BOUL**
- **35000 SGMR**
- **4995 SGMR**
- **2800 OTTA**
- **2695 SGMR**
- **1420 BOUL**
- **606 SGMR**
- **10700 PENN**
- **2800 OTTA**
- **15400 SGMR**
- **10700 PENN**
- **8800 SGMR**
- **4995 SGMR**
- **2695 SGMR**
- **9400 HUAN**
- **2700 PENN**
- **960 PENN**
- **2695 BOUL**
- **4995 BOUL**
- **1415 SGMR**
- **410 SGMR**
- **2800 OTTA**
- **606 SGMR**
- **245 SGMR**
- **1420 BOUL**
- **245 BOUL**
---
71
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME UT | TIME OF MAXIMUM UT | DURATION MINUTES | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|------------------|--------------------|------------------|---------------------------------------------|-----|----------|
| 1415 SGMR | 47 | 2032.7 | 2121.9 | 186.3U | 15000.0 | | |
| 2695 SGMR | 47 | 2033.3 | 2143.8 | 185.7U | 13850.0 | | |
| 9400 HUAN | 45 | 2035.9 | 2144.8 | 20.9 | 6782.8 | | |
| 8800 SGMR | 47 | 2035.3 | 2144.5 | 151.7U | 12260.0 | | |
| 4995 SGMR | 47 | 2035.2 | 2144.5 | 169.8U | 21000.0 | | |
| 35000 SGMR | 47 | 2036.5 | 2145.5 | 139.5U | 950.0 | | |
| 15400 SGMR | 47 | 2039 | 2144.4 | 140 U | 3300.0 | | |
| 8800 MANI | 29 | 2145 E | | | | | PBI |
| 4995 MANI | 29 | 2145 E | | | | | AT |
| 2695 MANI | 29 | 2145 E | | | | | LOCAL |
| 1415 MANI | 29 | 2145 E | | | | | SUNRISE |
| 606 MANI | 29 | 2145 E | | | | | |
| 9400 HUAN | 29 | 2156.8 | 2156.8 | 37.4 | 3377.2 | | |
| 2695 PENT | 29 | 2359 | | | | | |
| 245 BOUL | 44 | 2258 | | | | | |
| 606 MANI | 47 | 0136.5 | 0204 | 66.8 | 2500.0 | | |
| 8800 MANI | 20 | 0140.7 | 0201.7 | 55.8 | 7.1 | | |
| 4995 MANI | 20 | 0140.1 | 0208.6 | 56.4 | 7.7 | | |
| 2695 MANI | 20 | 0140.7 | 0204.9 | 57.1 | 6.1 | | |
| 1415 MANI | 46 | 0142.7 | 0211.5 | 60.6 | 164.0 | | |
| 1420 CRON | 45 | 0309 | 0313.5 | 28 | 9.0 | | |
| 1415 MANI | 20 | 0402.7 | 0414.4 | 36.3 | 7.2 | | |
| 606 MANI | 46 | 0402.7 | 0414 | 39 | 125.0 | | |
| 410 SGMR | 44 | 0942 E | | | | | |
| 245 SGMR | 44 | 0942 E | | | | | |
| 245 BOUL | 44 | 1209 E | | | | | |
| 10700 PENN | 1 | 1407.1 | 1407.2 | 6.7 | 8.8 | | |
| 10700 PENN | 3 | 1500 | 1503.8 | 6 E | 141.0 | | |
| 9500 BERL | 4 | 1500.5 | 1503.6 | 9 | 138.0 | | |
| 2700 PENN | 3 | 1500 | 1503.6 | 6 E | 98.0 | | |
| 4995 SGMR | 4 | 1501.9 | 1503.6 | 9.8 | 79.0 | | |
| 4995 CANR | 4 | 1501 | 1503 | 5 | 51.0 | | |
| 4995 BOUL | 4 | 1501 | 1503.5 | 5 | 83.0 | | |
| 2695 CANR | 3 | 1501.5 | 1503.5 | 12.5 | 76.0 | | |
| 2695 SGMR | 4 | 1501.9 | 1503.5 | 10.4 | 65.0 | | |
| 1415 SGMR | 4 | 1501.8 | 1503.4 | 10.2 | 74.0 | | |
| 35000 SGMR | 3 | 1502.2 | 1503.7 | 4.8 | 51.0 | | |
| 15400 SGMR | 4 | 1502.3 | 1503.7 | 7.8 | 100.0 | | |
| 9400 HUAN | 45 | 1502.1 | 1503.8 | 4.5 | 166.8 | | |
| 8800 SGMR | 4 | 1502.1 | 1503.7 | 9 | 185.0 | | |
| 2800 OTTA | 4 | 1502 | 1503.5 | 4.5 | 66.0 | | |
| 2695 BOUL | 3 | 1502.5 | 1504.5 | 8 | 60.0 | | |
| 1500 BERL | 4 | 1502.3 | 1503.6 | 8.7 | 69.0 | | |
| 1420 CANR | 45 | 1502 | 1504 | 5 | 84.0 | | |
| 1420 BOUL | 45 | 1502.5 | 1504 | 9.5 | 77.0 | | |
| 960 PENN | 1 | 1503.3 | 1503.9 | 1.9 | 1.7 | | |
| 2700 PENN | 29 | 1505.4 | 1505.4 | 50.7 | 9.8 | | |
| 2800 OTTA | 29 | 1506.5 | | | | | |
| 15400 SGMR | 3 | 1621.2 | 1621.4 | 1.4 | 16.1 | | |
| 2800 OTTA | 20 | 1633 | | | | | |
| 2800 OTTA | 20 | 1800 | 1810 | 55 | 2.8 | | |
| 2695 CANR | 3 | 1840 | 1840.5 | 1.5 | 5.0 | | |
| 2800 OTTA | 24 | 2010 | | | | | |
| 9400 HUAN | 3 | 2017.8 | 2020.7 | 11.3 | 20.6 | | |
| 10700 PENN | 3 | 2018 | 2019.4 | 6.6 | 14.8 | | |
| 9400 HUAN | 45 | 2134.1 | 2139.4 | 7.8 | 78.7 | | |
| 10700 PENN | 3 | 2136.2 | 2139.6 | 15 | 65.5 | | |
| 2800 OTTA | 21 | 2150 | 2214 | 245 | 16.0 | | |
| 4995 BOUL | 3 | 2201.5 | 2204 | 10 | 20.0 | | |
| 2695 BOUL | 3 | 2202 | 2204.5 | 7 | 8.0 | | |
| 2700 PENN | 20 | 2203.4 | 2214.2 | 56.6 | 33.4 | | |
| 10700 PENN | 3 | 2205.7 | 2214.3 | 37.9 | 40.3 | | |
| 9400 HUAN | 45 | 2206.4 | 2214.2 | 13.6 | 39.4 | | |
| 960 PENN | 45 | 2217.1 | 2242.7 | | 15.2 | | |
| 1415 MANI | 2 | 2240.9 | 2243.3 | 7.4 | 3.5 | | |
| 606 SGMR | 40 | 2240.9 | 2247.1 | 7.6 | 16.6 | | |
| 606 MANI | 2 | 2240 | 2247.2 | 8.3 | 9.2 | | |
| 410 SGMR | 6 | 2240.8 | 2247 | 7.7 | 195.0 | | |
| 1420 BOUL | 45 | 2241 | 2243 | 3 | 7.0 | | |
| 1415 SGMR | 40 | 2241 | 2242.9 | 7.4 | 6.3 | | |
| 2695 BOUL | 3 | 2246.5 | 2247 | 2 | 4.0 | | |
| 1420 BOUL | 3 | 2246.5 | 2247.5 | 1.5 | 5.0 | | |
| 1420 BOUL | 45 | 2300.5 | 2303.5 | 9 | 19.0 | | |
| 4995 BOUL | 3 | 2301 | 2302.5 | 11.5 | 16.0 | | |
| 2695 PENT | 4 | 2301 | 2303 | 8 | 18.8 | | |
| 606 MANI | 40 | 2301.3 | 2302.7 | 11.7 | 201.0 | | |
| 8800 SGMR | 4 | 2302.2 | 2303.9 | 5.1 | 35.1 | | |
| 4995 SGMR | 4 | 2302.1 | 2303 | 5.9 | 30.5 | | |
| 4995 MANI | 2 | 2302.4 | 2302.7 | 6.5 | 7.2 | | |
| 2695 BOUL | 3 | 2302 | 2303.5 | 7 | 12.0 | | |
| 2695 SGMR | 4 | 2302 | 2302.9 | 6 | 22.4 | | |
| 2695 MANI | 4 | 2302.4 | 2302.8 | 5.8 | 12.9 | | |
| 1415 SGMR | 4 | 2302 | 2302.9 | 6.5 | 24.5 | | |
| 1415 MANI | 4 | 2302.4 | 2302.9 | 5.8 | 20.1 | | |
| 606 SGMR | 4 | 2302 | 2302.6 | 6.5 | 205.0 | | |
| 410 SGMR | 48 | 2302 | 2303.7 | 5.6 | 555.0 | | |
| 1420 BOUL | 8 | 2329 | 2330 | 1 | 9.0 | | |
| 1420 BOUL | 3 | 2351 | 2352.5 | 4 | 1.0 | | |
---
72
## Solar Radio Emission Outstanding Occurrences
**July 26 - August 14, 1972**
| Frequency Station | Type | Starting Time UT | Time of Maximum UT | Duration Minutes | Flux Density $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ |
|-------------------|------|------------------|--------------------|-----------------|------------------------------------------|
| | | | | | Peak Mean |
| 2695 MANI | 1 | 0220.6 | 0220.8 | 1.9 | 6.5 |
| 606 MANI | 8 | 0220.4 | 0220.8 | 1.2 | 43.6 |
| 606 MANI | 2 | 0337.5 | 0338.8 | 1.8 | 6.6 |
| 606 MANI | 8 | 0440.8 | 0441.2 | 0.7 | 112.0 |
| 8800 MANI | 28 | 0506.2 | 0527.9 | 72.6 | 235.0 |
| 4995 MANI | 28 | 0508.6 | 0527.9 | 69.8 | 112.0 |
| 2695 MANI | 28 | 0508.1 | 0528.4 | 70.8 | 63.0 |
| 1415 MANI | 28 | 0512.8 | 0528.7 | 65.6 | 13.2 |
| 4995 CRON | 45 | 0520.5 | 0527 | 37.5 | 82.0 |
| 9500 BERL | 46 | 0524 U | 0527.5 | 18 U | 116.0U |
| 1500 BERL | 45 | 0524.5 | 0528 | 37.5 | 38.0 |
| 1420 CRON | 45 | 0525.5 | 0529 | 31 | 11.0 |
| 1500 BERL | 47 | 0540 U | 0624 U | 360 D | 1400.0D |
| 2695 CRON | 47 | 0604 | 0636.5 | 227 D | 4500.0 |
| 606 MANI | 40 | 0606.6 | 0616.7 | 10.9 | 19.1 |
| 9500 BERL | 47 | 0607 U | 0630 U | 240 D | 5300.0D |
| 4995 CRON | 47 | 0607 | 0634.5 | 221.5D | 8435.0 |
| 23 POTS | 45 | 0612.2 | 0612.2 | .4 | 1000.0 |
| 1420 CRON | 47 | 0617.5 | 0634 | 215.5D | 3489.0 |
| 8800 MANI | 47 | 0618.6 | 0634.3 | 26.4 | 36500.02 |
| 4995 MANI | 47 | 0618.4 | 0635 | 26.8 | 19500.01 |
| 2695 MANI | 47 | 0618.4 | 0635.7 | 26.3 | 7500.0 |
| 1415 MANI | 47 | 0618.5 | 0633.4 | 28.7 | 6700.0 |
| 606 MANI | 47 | 0620 | 0643.1U | 28.2 | 30000.01 |
| 234 POTS | 45 | 0620.5U | 0642 U | 439.5U | 500000.0U |
| 113 POTS | 45 | 0624 U | 0646 U | 492 U | 9000.0 |
| 23 POTS | 45 | 0624 U | 0632.5U | 19 U | 90000.0 |
| 8800 MANI | 29 | 0645.2 | 0645.2 | 189.8D | 4200.0 |
| 4995 MANI | 29 | 0645.2 | 0645.2 | 189.8D | 3500.0 |
| 2695 MANI | 29 | 0645.2 | 0645.2 | 189.8D | 2700.0 |
| 1415 MANI | 29 | 0647.1 | 0647.1 | 187.9D | 1050.0 |
| 606 MANI | 30 | 0648.2 | 0648.2 | 186.8D | 2000.0 |
| 606 MANI | 40 | 0652.9 | 0808.7 | 139.6 | 12000.0 |
| 4995 CANR | 40 | 0700 E | 0719 | 200 D | 403.0 |
| 2695 CANR | 40 | 0700 E | 0719.5 | 245.5 | 490.0 |
| 1420 CANR | 40 | 0700 E | 0722 | 225 D | 338.0 |
| 930 BORD | 47 | 0712 E | 0942.2 | 211 D | 1886.0 |
| 2695 SGMR | 0943 | | 104 D | | |
| 1415 SGMR | 0943 | | 1017.4 | 149.5D | 63.0 |
| 606 SGMR | 0943 | | 1021.5 | 143.2D | 336.0 |
| 410 SGMR | 44 | 0943 E | 1404.7 | 852 D | 39.2 |
| 410 SGMR | 0943 | | 1021.2 | 143.2D | 193.0 |
| 245 SGMR | 44 | 0943 E | 1930.6 | 852 D | 988.0 |
| 245 SGMR | 0943 | | 1008.8 | 143.2D | 1000.0 |
| 245 BOUL | 44 | 1206 E | 201 D | | |
| 1420 CANR | 3 | 1032.5 | 1037.5 | 10 | 4.0 |
| 1420 CANR | 4 | 1051 | 1057.5 | 15 | 12.0 |
| 1420 CANR | 45 | 1113.5 | 1123 | 17 | 44.0 |
| 2800 OTTA | 20 | 1117 | 1120 | 11 | 4.2 |
| 2695 CANR | 3 | 1117 | 1119.5 | 10 | 5.0 |
| 606 SGMR | 22 | 1208.1 | 1223.5 | 33.4 | 23.8 |
| 2800 OTTA | 23 | 1210 | 1318 | 145 | 8.0 |
| 2695 SGMR | 20 | 1211.7 | 1223.5 | 27.1 | 8.8 |
| 1500 BERL | 20 | 1212 | 1223 | 43 | 13.0 |
| 1420 CANR | 3 | 1212 | 1223.5 | 38.5 | 14.0 |
| 930 BORD | 45 | 1213 | 1213.7 | 1 | 55.0 |
| 2800 OTTA | 20 | 1215 | 1220 | 18 | 3.0 |
| 1415 SGMR | 20 | 1215 | 1223.6 | 22.5 | 7.4 |
| 9500 BERL | 20 | 1217 | 1315.3 | 107 | 15.0 |
| 930 BORD | 45 | 1218 | 1223.2 | 9 | 29.0 |
| 4995 SGMR | 20 | 1254.3 | 1318.2 | 57.2 | 18.2 |
| 1415 SGMR | 22 | 1259.8 | 1310.7 | 37.9 | 8.8 |
| 8800 SGMR | 20 | 1304 | 1315 | 30.9 | 20.7 |
| 1500 BERL | 22 | 1304 | 1310.7 | 55 | 12.0 |
| 930 BORD | 41 | 1304 | 1315.1 | 27 | 41.0 |
| 23 POTS | 41 | 1304.2 | 1304.5 | 9.5 | 28000.0 |
| 2695 SGMR | 20 | 1306.5 | 1318.2 | 40.6 | 8.8 |
| 2700 PENN | 40 | 1308 | 30 | | |
| 1420 CANR | 8 | 1310.5 | 1311 | 1.5 | 15.0 |
| 9400 HUAN | 20 | 1311.6 | 1324.8 | 29.3 | 11.3 |
| 4995 CANR | 3 | 1311 | 1314.5 | 8.5 | 12.0 |
| 606 SGMR | 22 | 1312.8 | 1316.8 | 28.8 | 67.0 |
| 960 PENN | 41 | 1314.9 | 1317.1 | 4.1 | 32.3 |
| 1420 CANR | 45 | 1315 | 1316 | 16 | 7.0 |
| 245 SGMR | 49 | 1315.2 | 1317.5 | 22.1 | 790.0 |
| 410 SGMR | 49 | 1316.3 | 1328.8 | 14.1 | 1100.0 |
| 23 POTS | 41 | 1321.8 | 1321.9 | 8.5 | 10000.0 |
| 113 POTS | 45 | 1326.9 | 1327.1 | 3 | 1400.0 |
| 9500 BERL | 1 | 1426 | 5.9 | | |
| 1500 BERL | 46 | 1424 | 1425.7 | 4 | 17.0 |
| 1420 CANR | 8 | 1424 | 1426 | 5 | 30.0 |
| 1415 SGMR | 40 | 1424 | 1425.7 | 4.8 | 8.2 |
| 930 BORD | 45 | 1424 | 1425.2 | 2 | 22.0 |
| 606 SGMR | 40 | 1424.7 | 1425 | 3.1 | 24.6 |
| 410 SGMR | 6 | 1424.1 | 1424.9 | 6.6 | 145.0 |
| 1420 BOUL | 8 | 1425 | 1426 | 1.5 | 33.0 |
| 4995 CANR | 45 | 1511 | 1513 | 7.5 | 24.0 |
| 4995 BOUL | 45 | 1512.5 | 1514 | 5.5 | 32.0 |
| 10700 PENN | 20 | 1513.5 | 1514.1 | 96.7 | 17.6 |
**Remarks:**
- PEAK ALSO SUNSET
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|----------|
| | | UT | UT | MINUTES | PEAK | MEAN | |
| 9500 BERL | 46 | 1513 | 1514 | 7 | 22.0 | 5.3 | |
| 8800 SGMR | 46 | 1513.7 | 1514.1 | 7.2 | 25.9 | 10.4 | |
| 4995 SGMR | 46 | 1513.5 | 1514 | 8.3 | 36.1 | 14.2 | |
| 2800 OTTA | 45 | 1513 | 1514 | 5 | 35.0 | 12.4 | |
| 2700 PENN | 45 | 1513.2 | 1514 | 7.6 | 55.5 | 10.2 | |
| 2695 CANR | 45 | 1513 | 1514 | 6.5 | 34.0 | 10.0 | |
| 2695 SGMR | 46 | 1513.4 | 1514.1 | 6.3 | 34.5 | 13.9 | |
| 2695 BOUL | 45 | 1513.5 | 1515 | 5 | 23.0 | 5.0 | |
| 1500 BERL | 45 | 1513 | 1514 | 11 | 12.0 | 3.1 | |
| 1420 CANR | 45 | 1513 | 1514.5 | 7.5 | 13.0 | 4.0 | |
| 1420 BOUL | 45 | 1513.5 | 1514.5 | 5 | 12.0 | 3.0 | |
| 1415 SGMR | 46 | 1513.4 | 1514.1 | 4.7 | 9.5 | 4.2 | |
| 960 PENN | 45 | 1513.2 | 1517.1 | 5.2 | 34.4 | 5.1 | |
| 930 BORD | 45 | 1513 | 1516.4 | 6 | 108.0 | 5.0 | |
| 606 SGMR | 46 | 1513.2 | 1516.4 | 5.7 | 200.0 | 80.0 | |
| 410 SGMR | 48 | 1513.4 | 1514.1 | 5.1 | 940.0 | 380.0| |
| 245 SGMR | 6 | 1513.8 | 1514.1 | 5.6 | 84.0 | 26.0 | |
| 23 POTS | 45 | 1513.3 | 1516.6 | 3.7 | 50000.0 | 8000.0| |
| 2800 OTTA | 29 | 1518 | 1518 | 20 | 2.2 | 1.1 | |
| 2800 OTTA | 26 | 1700 | 1700 | 30 | 2.4 | 1.1 | |
| 9400 HUAN | 20 | 1839.3 | 1901.7 | 41.4 | 13.2 | 6.9 | |
| 4995 CANR | 45 | 1839 | 1845.5 | 8.5 | 10.0 | 3.0 | |
| 2800 OTTA | 20 | 1840 | 1905 | 50 | 2.0 | 1.0 | |
| 2695 CANR | 45 | 1840 | 1846.5 | 8 | 6.0 | 2.0 | |
| 1420 CANR | 45 | 1840 | 1842 | 8 | 5.0 | 2.0 | |
| 1420 CANR | 45 | 1854 | 1856.5 | 3.5 | 4.0 | 1.0 | |
| 4995 CANR | 3 | 1855 | 1855.5 | 1.5 | 6.0 | 3.0 | |
| 2695 CANR | 3 | 1855 | 1856 | 2.5 | 6.0 | 2.0 | |
| 9400 HUAN | 20 | 1931.4 | 1941.4 | 33.4 | 18.9 | 7.3 | |
| 2800 OTTA | 20 | 2020 | 2040 | 60 | 2.0 | 1.0 | |
| 2800 OTTA | 24 | 2135 | 2135 | 25 | 2.4 | 1.0 | |
| 10700 PENN | 20 | 2204.8 | 2208.2 | 16.9 | 13.7 | 6.9 | |
| 2800 OTTA | 20 | 2205 | 2210 | 20 | 2.0 | 1.0 | |
| 4995 BOUL | 21 | 2207 | 2207.5 | 18 | 7.0 | 2.0 | |
| 1420 BOUL | 8 | 2304.5 | 2305.5 | 2 | 24.0 | 8.0 | |
| 2695 BOUL | 3 | 2322.5 | 2325 | 8.5 | 9.0 | 2.0 | |
| 8800 MANI | 3 | 2323.2 | 2324.8 | 2.5 | 52.0 | 18.9 | |
| 4995 MANI | 3 | 2323.5 | 2324.8 | 2.2 | 22.4 | 4.8 | |
| 4995 BOUL | 8 | 2323.5 | 2324.5 | 2 | 26.0 | 10.0 | |
| 4995 CRON | 8 | 2323.5 | 2324.5 | 1.5 | 20.0 | 4.0 | |
| 2695 CRON | 1 | 2323.5 | 2324 | 2 | 5.0 | 2.0 | |
| 8800 SGMR | 3 | 2324.5 | 2325 | 1 | 44.4 | 11.0 | |
| 4995 SGMR | 3 | 2324.2 | 2324.7 | 1.3 | 18.5 | 4.0 | |
| 2695 SGMR | 4 | 2324.3 | 2325 | 1.2 | 17.4 | 4.3 | |
| 2695 PENT | 1 | 2324.3 | 2325 | 1.7 | 7.0 | 3.5 | |
| 2695 MANI | 1 | 2324.4 | 2324.8 | 1.2 | 6.8 | 1.4 | |
| 1420 CRON | 8 | 2324 | 2325 | 1 | 23.0 | 10.0 | |
| 1415 SGMR | 4 | 2324.5 | 2325.1 | 1.3 | 23.7 | 6.0 | |
| 1415 MANI | 4 | 2324.4 | 2325.1 | 5.6 | 23.0 | 6.1 | |
| 2695 PENT | 30 | 2326 | 2329 | 20 | 2.4 | 1.2 | |
| 2695 PENT | 8 | 2329 | 2329 | 2.4 | | | |
---
**Continued...**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| 606 MANI | 2 | 0702.4 | 0703 | 1.7 | 5.4 | | |
| 113 POTS | 45 | 0920.7 | 0922.5 | 5 | 1000.0 | | |
| 23 POTS | 45 | 0920.7 | 0922.2 | 5.2 | 11000.0 | | |
| 2695 CANR | 3 | 0921 | 0922.5 | 2 | 4.0 | | |
| 410 SGMR | 44 | 0945 E | 1134 | 848 D | 11.0 | | |
| 245 SGMR | 44 | 0945 E | 1130.6 | 848 D | 160.0 | | |
| 245 BOUL | 43 | 1203 E | 1302 D | 1 | 1.0 | | |
| 2695 CANR | 3 | 1132.5 | 1133 | 2.5 | 4.0 | | |
| 1420 CANR | 3 | 1133 | 1134 | 2 | 2.0 | | |
| 234 POTS | 41 | 1156.3 | 1157.1 | 0.8 | 200.0 | | |
| 1420 CANR | 8 | 1157.5 | 1158 | 1 | 4.0 | | |
| 2695 CANR | 3 | 1242.5 | 1243.5 | 1.5 | 2.0 | | |
| 1420 CANR | 8 | 1243 | 1244 | 1.5 | 6.0 | | |
| 10700 PENN | 41 | 1352.6 | 1354.7 | 3.4 | 18.0 | | |
| 15400 SGMR | 3 | 1526.1 | 1526.4 | 4.7 | 52.0 | | |
| 10700 PENN | 1 | 1526.2 | 1526.4 | 6.1 | 8.8 | | |
| 10700 PENN | 20 | 1534.1 | 1540 | 17 | 8.8 | | |
| 2695 BOUL | 45 | 1612.5 | 1614.5 | 3 | 40.0 | | |
| 2695 CANR | 45 | 1612 | 1614.5 | 13 | 63.0 | | |
| 2800 OTTA | 4 | 1613 | 1613.7 | 2 | 25.0 | | |
| 2700 PENN | 45 | 1613.1 | 1613.5 | 3 | 153.0 | | |
| 2695 SGMR | 4 | 1613 | 1613.4 | 2.2 | 54.0 | | |
| 2800 OTTA | 29 | 1615 | 13 | 1.8 | 0.9 | | |
| 10700 PENN | 1 | 1626.7 | 1630.7 | 8.9 | 9.2 | | |
| 9400 HUAN | 20 | 1646.9 | 1651.9 | 24.8 | 14.9 | | |
| 10700 PENN | 3 | 1647.3 | 1656 | 16.1 | 18.7 | | |
| 8800 SGMR | 20 | 1647.9 | 1652 | 24.2 | 15.0 | | |
| 4995 SGMR | 20 | 1650 | 1658.5 | 16.1 | 2.1 | | |
| 2800 OTTA | 1 | 1757 | 1759 | 7 | 1.4 | | |
| 9400 HUAN | 20 | 1801.3 | 1804.1 | 17.3 | 7.5 | | |
| 15400 SGMR | 3 | 1840.2 | 1840.9 | 4.5 | 20.0 | | |
| 10700 PENN | 3 | 2139.9 | 2144.2 | 20.7 | 21.6 | | |
| 9400 HUAN | 20 | 2140.2 | 2146.8 | 14.7 | 18.7 | | |
| 15400 SGMR | 3 | 2300.5 | 2300.6 | 1.2 | 78.0 | | |
**PEAK=9**
| 8800 MANI | 4 | 0251.4 | 0252.4 | 10.6 | 377.0 | | |
| 4995 MANI | 4 | 0251.4 | 0252.4 | 15.2 | 83.0 | | |
| 4995 CRON | 4 | 0251 | 0252 | 16 | 68.0 | | |
| 2695 MANI | 40 | 0251.4 | 0253.2 | 2.8 | 40.0 | | |
| 2695 CRON | 45 | 0251 | 0252.5 | 2.5 | 28.0 | | |
| 8800 MANI | 46 | 0345.8 | 0354.4 | 24.9 | 191.0 | | |
| 4995 MANI | 4 | 0345.8 | 0354.4 | 31.9 | 78.0 | | |
| 4995 CRON | 45 | 0345.5 | 0358 | 67.5 | 54.0 | | |
| 2695 CRON | 45 | 0346 | 0354.5 | 84.5 | 271.0 | | |
| 2695 MANI | 40 | 0347.8 | 0354.8 | 17.6 | 440.0 | | |
| 1420 CRON | 21 | 0353.5 | 0355 | 35.5 | 3.0 | | |
| 9500 BERL | 46 | 0400 E | 0401.7 | 50 D | 140.00 | | |
| 1500 BERL | 46 | 0400 E | 0401.7 | 40 D | 10.00 | | |
| 1420 CANR | 3 | 0923 | 0927 | 7 | 3.0 | | |
| 410 SGMR | 44 | 0947 E | 346 U | | | | |
| 245 SGMR | 44 | 0947 E | 346 U | | | | |
| 2695 CANR | 3 | 1016.5 | 1017 | 2.5 | 4.0 | | |
| 1500 BERL | 1 | 1016.8E | 1016.8 | 2.2 | 4.0 | | |
| 1420 CANR | 8 | 1017 | 1017.5 | 1.5 | 4.0 | | |
| 2695 CANR | 3 | 1022.5 | 1023.5 | 1.5 | 4.0 | | |
| 4995 CANR | 21 | 1049.5 | 1056 | 36.5 | 24.0 | | |
| 9500 BERL | 4 | 1054 | 1056.5 | 56 | 90.0 | | |
| 8800 SGMR | 4 | 1054.6 | 1056.8 | 10.5 | 88.0 | | |
| 4995 SGMR | 22 | 1054.5 | 1056.7 | 20 | 31.0 | | |
| 1415 SGMR | 1 | 1054.5 | 1057.3 | 5.5 | 5.5 | | |
| 606 SGMR | 4 | 1054.6 | 1056 | 3.4 | 40.0 | | |
| 15400 SGMR | 4 | 1055.4 | 1056.7 | 6.2 | 85.0 | | |
| 2800 OTTA | 46 | 1055 | 1057 | 6.5 | 67.0 | | |
| 2695 CANR | 40 | 1055 | 1057.5 | 7.5 | 131.0 | | |
| 2695 SGMR | 4 | 1055.4 | 1057 | 7.7 | 120.0 | | |
| 1500 BERL | 1 | 1055.7 | 1056.7 | 27 | 4.3 | | |
| 1420 CANR | 3 | 1055.5 | 1057.5 | 6.5 | 5.0 | | |
| 2800 OTTA | 29 | 1101.5 | 55 | 11.0 | 5.5 | | |
| 4995 CANR | 45 | 1159.5 | 1202.5 | 3.5 | 49.0 | | |
| 15400 SGMR | 4 | 1200.6 | 1201.8 | 6.1 | 300.0 | | |
| 10700 PENN | 3 | 1200 | 1203.2 | 20 D | 42.0D | | |
| 9500 BERL | 4 | 1200 | 1201.6 | 45 | 242.0 | | |
| 9400 HUAN | 45 | 1200.6 | 1201.8 | 3.6 | 273.6 | | |
| 8800 SGMR | 4 | 1200.5 | 1201.9 | 6 | 280.0 | | |
| 4995 SGMR | 46 | 1200.7 | 1201.9 | 3 | 80.0 | | |
| 2800 OTTA | 21 | 1200 | 1335 | 150 D | 15.8 | | |
| 2695 CANR | 3 | 1200.5 | 1201.5 | 2 | 12.0 | | |
| 2695 SGMR | 4 | 1200.6 | 1201.3 | 2.4 | 11.0 | | |
| 2800 OTTA | 40 | 1201 | 1201.3 | 2 | 18.0 | | |
| 4995 SGMR | 29 | 1203.7 | 1203.7 | 28.2 | 7.8 | | |
| 9400 HUAN | 29 | 1205.2 | 1205.8 | 12.6 | 30.0 | | |
| 8800 SGMR | 29 | 1206.5 | 1206.5 | 23.5 | 29.0 | | |
| 2695 CANR | 3 | 1211.5 | 1212.5 | 1.5 | 4.0 | | |
| 245 BOUL | 42 | 1213 | 1249 | 178 | | | |
| 113 POTS | 45 | 1226.6 | 1226.8 | 1.2 | 800.0 | | |
| 930 BORD | 45 | 1259 | 1259.3 | 1 | 20.0 | | |
| 9500 BERL | 47 | 1300 | 1525 U | 180 D | 5300.0D | | |
| 2695 CANR | 3 | 1316 | 1316.5 | 1.5 | 3.0 | | |
| 2695 BOUL | 3 | 1318.5 | 1319 | 1 | 4.0 | | |
| 2800 OTTA | 40 | 1320.5 | 1320.7 | 2.5 | 4.6 | | |
**PEAK=140**
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|---------|
| | | UT | UT | MINUTES | PEAK | MEAN |
| 7 | | | | | | |
| 2695 CANR | 3 | 1320.5 | 1321 | 2.5 | 6.0 | 2.0 |
| 1500 BERL | 47 | 1320 | 1524.5 | 180 D | 1400.0D | |
| 2695 BOUL | 3 | 1416.5 | 1417 | 2.5 | 5.0 | 2.0 |
| 4995 BOUL | 45 | 1417 | 1417.5 | 5.5 | 14.0 | 6.0 |
| 234 POTS | 45 | 1425 U | 1522 U | 140 U | 800.0 | 120.0 |
| 2695 BOUL | 3 | 1426 | 1427 | 4 | 3.0 | 1.0 |
| 2800 OTTA | 28 | 1430 | | 35 | 16.6 | 8.3 |
| 960 PENN | 47 | 1434.9 | | 125 | 1150.0D | |
| 2695 SGMR | 47 | 1435.5 | 1526.8 | 63.5 | 3907.0 | 980.0 |
| 2700 PENN | 47 | 1436.1 | | 129 | 4520.0D | |
| 245 SGMR | 49 | 1436 | 1522.4 | 58.5 | 1374.0 | 340.0 |
| 113 POTS | 45 | 1438 U | 1520.5U | 136 U | 2000.0 | 400.0 |
| 8800 SGMR | 47 | 1447.6 | 1521.9 | 51.4 | 27056.0 | 8900.0 |
| 4995 SGMR | 47 | 1447.8 | 1526.6 | 51.7 | 8361.0 | 2100.0 |
| 606 SGMR | 47 | 1451.9 | 1521.8 | 38.1 | 6949.0 | 1700.0 |
| 410 SGMR | 49 | 1451.5 | 1521.6 | 39.8 | 4246.0 | 1100.0 |
| 930 BORD | 47 | 1453 | | 83 D | 4270.0D | 230.0 |
| 4995 CANR | 47 | 1457 | 1527 | 146.5 | 8600.0 | 1426.0 |
| 4995 BOUL | 47 | 1457 | 1527 U | 146.7 | 13068.0 | 2568.0 |
| 2695 BOUL | 47 | 1457 | 1529 | 126 | 3481.0 | 517.0 |
| 2695 CANR | 47 | 1457.5 | 1529 | 80 | 3594.0 | 758.0 |
| 1420 BOUL | 47 | 1457 | 1516.5 | 221.5 | 2176.0 | 238.0 |
| 1415 SGMR | 47 | 1458.2 | 1516 | 31.8 | 4162.0 | 1000.0 |
| 10700 PENN | 47 | 1459.2 | | 67.1 | 7330.0D | |
| 1420 CANR | 47 | 1502 | 1516.5 | 95 | 2375.0 | 414.0 |
| 9400 HUAN | 47 | 1505.6 | 1526.8 | 30.9 | 15123.2 | 3726.8 |
| 2800 OTTA | 47 | 1505 | 1528 | 65 | 4500.0 | 1092.0 |
| 35000 SGMR | 47 | 1507.9 | 1521.8 | 26 | 14700.0 | 4800.0 |
| 15400 SGMR | 47 | 1507 | 1522.6 | 28.6 | 18555.0 | 4600.0 |
| 245 BOUL | 48 | 1511 | 1515 | 66 | 10000.0U | |
| 23 POTS | 45 | 1522 E | 1522 U | | 1366.0 | 160.0 |
| 1415 SGMR | 29 | 1530 | | 188.9 | 1366.0 | 160.0 |
| 606 SGMR | 29 | 1530 | | 186 | 437.0 | 95.0 |
| 410 SGMR | 6 | 1531.3 | | 184 | 220.0 | 40.0 |
| 35000 SGMR | 29 | 1533.9 | | 193.4 | 1450.0 | 340.0 |
| 245 SGMR | 6 | 1534.5 | | 177.8 | 92.0 | 21.0 |
| 15400 SGMR | 29 | 1535.6 | | 191.5 | 1000.0 | 250.0 |
| 9400 HUAN | 29 | 1536.5 | | 111.5 | 787.1 | 210.7 |
| 8800 SGMR | 29 | 1539 | | 191 U | 720.0 | 110.0 |
| 4995 SGMR | 29 | 1539.5 | | 190.5U | 275.0 | 46.0 |
| 2695 SGMR | 29 | 1539 | | 191 U | 328.0 | 60.0 |
| 10700 PENN | 29 | 1606.3 | | 205 | 95.3 | 47.6 |
| 2800 OTTA | 30 | 1610 | | 210 | 50.0 | 17.0 |
| 2700 PENN | 29 | 1645.1 | | 48.5 | 21.2 | 10.6 |
| 2800 OTTA | 1 | 1633 | | 3 | 5.0 | 2.5 |
| 2695 CANR | 3 | 1633 | | 12.0 | 4.0 | |
| 2800 OTTA | 1 | 1641.5 | | 1.5 | 6.2 | 3.1 |
| 2695 CANR | 8 | 1641.5 | | 1.5 | 9.0 | 4.0 |
| 1420 CANR | 3 | 1641.5 | | 3 | 8.0 | 3.0 |
| 2700 PENN | 3 | 1645.3 | | 10.1 | 42.4 | 15.7 |
| 2695 CANR | 3 | 1646.5 | | 7.5 | 36.0 | 13.0 |
| 1420 CANR | 45 | 1646.5 | | 8.5 | 41.0 | 17.0 |
| 960 PENN | 3 | 1646.5 | | 8.3 | 38.2 | 21.7 |
| 2800 OTTA | 3 | 1647 | | 9 | 25.8 | 11.2 |
| 1420 CANR | 45 | 1715.5 | | 13 | 14.0 | 5.0 |
| 2800 OTTA | 45 | 1716 | | 12 | 9.2 | 4.6 |
| 2695 BOUL | 45 | 1716.5 | | 11.5 | 9.0 | 3.0 |
| 2695 CANR | 45 | 1718.5 | | 9 | 12.0 | 4.0 |
| 2800 OTTA | 1 | 1736 | | 5 | 4.2 | 2.1 |
| 1420 CANR | 45 | 1736 | | 11.5 | 15.0 | 5.0 |
| 2695 CANR | 3 | 1737.5 | | 3.5 | 9.0 | 3.0 |
| 2695 BOUL | 3 | 1737.5 | | 3.5 | 5.0 | 2.0 |
| 2800 OTTA | 1 | 1750.5 | | 5 | 5.4 | 2.7 |
| 2695 BOUL | 3 | 1756 | | 5 | 7.0 | 3.0 |
| 1420 CANR | 3 | 1756 | | 7 | 9.0 | 3.0 |
| 1420 CANR | 3 | 1818.5 | | 2 | 5.0 | 2.0 |
| 1420 BOUL | 45 | 1852.5 | | 9 | 3.0 | 1.0 |
| 9400 HUAN | 20 | 1928.2 | | 33.6 | 7.5 | 2.1 |
| 2800 OTTA | 26 | 1940 | | 230 | 10.0 | |
| 2695 SGMR | 1 | 1944.9 | | 6.7 | 3.9 | 1.9 |
| 1420 BOUL | 45 | 1944.5 | | 13.5 | 7.0 | 2.0 |
| 1415 SGMR | 20 | 1944.8 | | 12.4 | 8.2 | 4.1 |
| 606 SGMR | 22 | 1944.9 | | 11.6 | 39.5 | 16.2 |
| 2800 OTTA | 1 | 1945 | | 6 | 2.8 | 1.4 |
| 2695 BOUL | 3 | 1947 | | 3.5 | 5.0 | 2.0 |
| 2800 OTTA | 1 | 1952 | | 3 | 1.2 | 0.6 |
| 2695 BOUL | 3 | 1953.5 | | 3 | 4.0 | 1.0 |
| 1420 BOUL | 21 | 2003 | | 20.5 | 7.0 | 2.0 |
| 245 SGMR | 6 | 2007 | | 18.8 | 7.2 | 3.5 |
| 2800 OTTA | 1 | 2008 | | 6 | 2.4 | 1.2 |
| 2695 SGMR | 20 | 2008.9 | | 11.6 | 3.9 | 1.8 |
| 1415 SGMR | 20 | 2008 | | 17.9 | 6.8 | 3.0 |
| 606 SGMR | 20 | 2008.3 | | 14.9 | 10.9 | 4.6 |
| 410 SGMR | 6 | 2008.9 | | 17.3 | 9.6 | 4.7 |
| 2695 BOUL | 3 | 2010 | | 4 | 3.0 | 1.0 |
| 245 SGMR | 6 | 2039.8 | | 31 | 10.4 | 5.2 |
| 606 SGMR | 20 | 2040.3 | | 31.5 | 4.2 | 2.1 |
| 410 SGMR | 6 | 2040.2 | | 30.8 | 13.8 | 7.9 |
| 1420 BOUL | 3 | 2047 | | 7 | 3.0 | 1.0 |
| 2695 BOUL | 3 | 2050 | | 3.5 | 3.0 | 1.0 |
76
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ | INT | REMARKS |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|-----|----------|
| | | UT | UT | MINUTES | PEAK | MEAN |
| 1415 SGMR | 22 | 2059.8 | 2101.5 | 11.8 | 9.5 | 4.2 |
| 1420 BOUL | 45 | 2100 | 2108 | 12.5 | 4.0 | 1.0 |
| 1420 BOUL | 21 | 2135.5 | 2140.5 | 17 | 3.0 | 1.0 |
| 9500 BERL | 22 | 0666 | 0729.7 | 74 | 14.0 | 3.0 |
| 4995 CANR | 3 | 1104.5 | 1105.5 | 2.5 | 4.0 | 2.0 |
| 4995 CANR | 45 | 1129 | 1129.5 | 2.5 | 18.0 | 8.0 |
| 15400 SGMR | 3 | 1130.6 | 1130.8 | 2.6 | 14.0 | 3.6 |
| 8800 SGMR | 1 | 1130.8 | 1131 | 4.8 | 8.4 | 2.1 |
| 4995 SGMR | 3 | 1130.7 | 1130.9 | 2.8 | 17.0 | 4.2 |
| 245 SGMR | 43 | 1212 | 1241.2 | 262.5 | 17.9 | 7.0 |
| 9400 HUAN | 20 | 1255.2 | 1338.7 | 71.7 | 9.4 | 3.7 |
| 2695 CANR | 3 | 1300 | 1300.5 | 1.5 | 3.0 | 1.0 |
| 9400 HUAN | 20 | 1524.1 | 1542 | 29 | 9.4 | 2.5 |
| 10700 PENN | 3 | 1541.3 | 1541.8 | 1.6 | 11.6 | 4.6 |
| 4995 BOUL | 3 | 2028 | 2029 | 3.5 | 11.0 | 4.0 |
| 10700 PENN | 20 | 2123 | 2206 | 66.5 | 21.7 | 11.2 |
| 9400 HUAN | 3 | 2123.1 | 2129.4 | 14.6 | 24.4 | 12.6 |
| 2800 OTTA | 21 | 2123 | 2200 | 135 | 4.8 | 2.4 |
| 2700 PENN | 20 | 2124.8 | 2129.8 | 77.8 | 13.7 | 6.9 |
| 2800 OTTA | 1 | 2127.5 | 2129 | 6.5 | 4.6 | 2.3 |
| 2695 BOUL | 8 | 2144 | 2144.5 | 1 | 5.0 | 2.0 |
| 4995 BOUL | 8 | 2145 | 2145 | 1 | 15.0 | 7.0 |
| 10700 PENN | 1 | 2234.4 | 2234.5 | 0.2 | 9.5 | 8.8 |
| 2695 PENT | 20 | 0005 | 60 | 3.6 | 1.8 |
| 8800 MANI | 3 | 0127.7 | 0128.4 | 2 | 16.0 | 6.0 |
| 4995 MANI | 1 | 0127.7 | 0128.3 | 1.9 | 4.5 | 1.5 |
| 2695 CANR | 3 | 0745.5 | 0746 | 2 | 4.0 | 1.0 |
| 9500 BERL | 20 | 0806.2 | 0831 | 39 | 14.0 | 6.0 |
| 1420 CANR | 45 | 0807.5 | 0809 | 2.5 | 3.0 | 1.0 |
| 113 POTS | 45 | 0811 U | 0859 U | 349 | 150.0| 13.0 |
| 1420 CANR | 8 | 1024 | 1025 | 1.5 | 3.0 | 1.0 |
| 4995 BOUL | 3 | 1336 | 1337.5 | 4.5 | 13.0 | 3.0 |
| 2800 OTTA | 20 | 1430 | 1455 | 80 | 2.4 | 1.2 |
| 2695 BOUL | 3 | 1454 | 1455.5 | 5 | 3.0 | 1.0 |
| 4995 CANR | 3 | 1611.5 | 1613.5 | 4 | 12.0 | 4.0 |
| 15400 SGMR | 3 | 1613.9 | 1614.1 | 2.6 | 15.0 | 4.0 |
| 10700 PENN | 3 | 1613.4 | 1614.5 | 4 | 23.6 | 4.6 |
| 9500 BERL | 4 | 1613.5 | 1614.4 | 3.1 | 23.0 | 6.0 |
| 9400 HUAN | 3 | 1613.6 | 1614.6 | 2 | 28.4 | 12.6 |
| 8800 SGMR | 3 | 1613.9 | 1614.6 | 2.6 | 23.6 | 6.0 |
| 4995 SGMR | 3 | 1613.9 | 1614.6 | 1.9 | 12.0 | 3.0 |
| 4995 BOUL | 3 | 1613.5 | 1614.5 | 2.5 | 13.0 | 3.0 |
| 930 BORD | 45 | 1657 | 1659.7 | 3 | 37.0 | 3.0 |
| 15400 SGMR | 3 | 1715.2 | 1715.5 | 4.6 | 16.8 | 4.0 |
| 10700 PENN | 1 | 1715.4 | 1715.8 | 2.4 | 9.2 | 2.1 |
| 8800 SGMR | 3 | 1715.2 | 1715.9 | 4.8 | 11.1 | 2.5 |
| 245 SGMR | 43 | 1805 | 1849.2 | 343 D | 19.3 |
| 10700 PENN | 3 | 1916.8 | 1918 | 8.6 | 33.1 | 6.3 |
| 9400 HUAN | 3 | 1916.5 | 1917.7 | 8.9 | 28.4 | 7.2 |
| 15400 SGMR | 3 | 1917.3 | 1918 | 10 | 22.4 | 5.0 |
| 8800 SGMR | 3 | 1917.3 | 1918 | 9.5 | 28.9 | 7.0 |
| 4995 SGMR | 1 | 1917.6 | 1917.8 | 8.5 | 3.1 | 1.0 |
| 2800 OTTA | 1 | 1917 | 1917.5 | 1 | 1.0 | 0.5 |
| 2695 BOUL | 3 | 1917 | 1917.5 | 1.5 | 4.0 | 1.0 |
| 1415 SGMR | 3 | 1932.7 | 1932.8 | 0.6 | 11.6 | 3.0 |
| 606 SGMR | 3 | 1932.7 | 1932.9 | 0.7 | 22.1 | 5.0 |
| 410 SGMR | 6 | 1932.8 | 1932.9 | 0.4 | 7.7 | 2.0 |
| 15400 SGMR | 3 | 2218.2 | 2218.5 | 1.2 | 105.0| 50.0 |
| 10700 PENN | 3 | 2218.1 | 2218.7 | 7.8 | 76.4 | 6.7 |
| 9400 HUAN | 3 | 2218.3 | 2218.6 | 1.1 | 64.5 | 22.5 |
| 8800 MANI | 8 | 2218.5 | 2218.6 | 0.3 | 34.2 | 7.3 |
| 606 SGMR | 3 | 2315.7 | 2315.9 | 0.6 | 17.0 | 7.0 |
| 606 MANI | 4 | 2315 | 2315.9 | 1.6 | 25.6 | 6.1 |
| 410 SGMR | 6 | 2315.8 | 2316.6 | 1.5 | 61.0 | 30.0 |
| 4995 CRON | 3 | 0150 | 0151.5 | 5.5 | 7.0 | 2.0 |
| 4995 CRON | 3 | 0310.5 | 0312 | 6.5 | 6.0 | 2.0 |
| 8800 MANI | 3 | 0311.8 | 0312.3 | 1.5 | 24.4 | 7.3 |
| 4995 MANI | 1 | 0311.6 | 0312.3 | 2.2 | 8.5 | 2.4 |
| 4995 CRON | 3 | 0328.5 | 0329 | 2 | 4.0 | 2.0 |
| 1420 CRON | 8 | 0543 | 0544.5 | 2 | 12.0 | 6.0 |
| 245 SGMR | 44 | 0949 E | 2341.2 | 838 D | 20.0 |
| 1500 BERL | 1 | 1059.5E | 1059.5 | 1.8 | |
| 9500 BERL | 3 | 1100.5 | 1104 | 12 | 108.0| 31.0 |
| 9500 BERL | 1 | 1100 E | 1100 | 6.3 | |
| 15400 SGMR | 3 | 1102.8 | 1104.1 | 2.7 | 220.0| 90.0 |
| 35000 SGMR | 3 | 1103.8 | 1104.4 | 1.4 | 135.0| 45.0 |
| 8800 SGMR | 3 | 1103.8 | 1104 | 5.7 | 105.0| 40.0 |
| 4995 SGMR | 3 | 1103.8 | 1104 | 5 | 15.2 | 4.0 |
| 2695 SGMR | 8 | 1103 | 1103.5 | 1.5 | 4.0 | 1.0 |
| 2695 SGMR | 1 | 1103.8 | 1103.9 | 0.8 | 2.2 | 1.0 |
| 1500 BERL | 1 | 1103.8E | 1103.8 | 2.0 | |
| 1415 SGMR | 1 | 1103.9 | 1104.2 | 2.9 | 1.8 | 0.9 |
| 15400 SGMR | 3 | 1120.7 | 1121.5 | 3.7 | 19.3 | 8.0 |
| 9500 BERL | 3 | 1120.5 | 1121.5 | 7.5 | 17.0 | 4.6 |
| 2695 CANR | 3 | 1120 | 1121.5 | 3 | 3.0 | 1.0 |
| 8800 SGMR | 3 | 1121.2 | 1121.7 | 3.6 | 10.1 | 4.0 |
| 4995 SGMR | 1 | 1121.1 | 1121.7 | 7.1 | 9.0 | 3.4 |
---
77
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|
| | | UT | UT | MINUTES | PEAK | MEAN |
| 9500 BERL | 3 | 1209.5 | 1210 | 25 | 40.0 | 13.0 |
| 1500 BERL | 1 | 1209.3E | 1209.3 | | 2.4 | |
| 4995 CANR | 3 | 1302.5 | 1305 | 4.5 | 14.0 | 5.0 |
| 4995 CANR | 3 | 1302.5 | 1303 | 2.5 | 13.0 | 5.0 |
| 15400 SGMR | 3 | 1304.9 | 1305.7 | 1.9 | 20.7 | 8.2 |
| 10700 PENN | 3 | 1304.3 | 1305.8 | 6.5 | 26.4 | 3.9 |
| 9500 BERL | 4 | 1304.4 | 1305.7 | 3.4 | 24.0 | 7.7 |
| 9400 HUAN | 3 | 1304.7 | 1305.4 | 1.7 | 28.7 | 11.7 |
| 4995 SGMR | 3 | 1304.9 | 1305.7 | 6.3 | 14.4 | 4.8 |
| 8800 SGMR | 3 | 1305.2 | 1305.8 | 3.1 | 24.2 | 9.6 |
| 2695 SGMR | 1 | 1305.2 | 1305.6 | 0.8 | 1.4 | 0.7 |
| 4995 CANR | 3 | 1320 | 1321 | 5.5 | 11.0 | 4.0 |
| 2695 BOUL | 3 | 1500 | 1501.5 | 2.5 | 3.0 | 1.0 |
| 2695 CANR | 3 | 1505 | 1511.5 | 3.5 | 5.0 | 1.0 |
| 4995 CANR | 3 | 1508.5 | 1510.5 | 6.5 | 11.0 | 4.0 |
| 9500 BERL | 20 | 1509.5 | 1511 | 28 | 8.5 | 2.8 |
| 4995 SGMR | 20 | 1509.9 | 1511.5 | 10.8 | 10.0 | 4.0 |
| 4995 BOUL | 3 | 1509.5 | 1511.5 | 3.5 | 9.0 | 3.0 |
| 2695 SGMR | 5 | 1509.2 | 1511.5 | 7.1 | 3.4 | 1.2 |
| 15400 SGMR | 5 | 1510.5 | 1511.1 | 1.7 | 11.7 | 5.0 |
| 8800 SGMR | 5 | 1510.3 | 1511.2 | 14.8 | 10.1 | 4.2 |
| 2800 OTTA | 1 | 1510 | 1511.5 | 4 | 2.8 | 1.4 |
| 960 PENN | 45 | 1816.3 | 1817 | 1.9 | 26.4 | 2.8 |
| 960 PENN | 45 | 1825.6 | 1827.9 | 3.1 | 43.3 | 4.8 |
| 2800 OTTA | 20 | 2045 | 2050 | 45 | 3.6 | 1.8 |
| 15400 SGMR | 20 | 2046 | 2052.3 | 21.3 | 30.8 | 12.0 |
| 10700 PENN | 3 | 2046.4 | 2052.4 | 13.6 | 19.3 | 7.5 |
| 9400 HUAN | 20 | 2048 | 2053.7 | 8.8 | 11.5 | 5.1 |
| 2700 PENN | 20 | 2048.2 | 2049.2 | 12.3 | 5.3 | 2.6 |
| 1420 BOUL | 4 | 2048.5 | 2050.5 | 3 | 15.0 | 6.0 |
| 1415 SGMR | 40 | 2048.5 | 2050.4 | 4.4 | 19.0 | 4.0 |
| 2695 PENT | 20 | 2325 | 2350 | 155 | 10.4 | 6.0 |
| 2695 BOUL | 3 | 2346.5 | 2349.5 | 4.5 | 6.0 | 2.0 |
| 1420 CRON | 3 | 2347.5 | 2349 | 4 | 11.0 | 3.0 |
| 2695 CRON | 3 | 2348.5 | 2349 | 3 | 2.0 | 1.0 |
| 1420 BOUL | 3 | 2348 | 2349.5 | 4 | 9.0 | 3.0 |
### Additional Data
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|
| 1420 BOUL | 21 | 0004.5 | 0005 | 5.5 | 5.0 | 1.0 |
| 1420 CRON | 8 | 0004 | 0005 | 1 | 5.0 | 2.0 |
| 1420 BOUL | 45 | 0106 | 0107 | 3 | 5.0 | 1.0 |
| 8800 MANI | 3 | 0503.6 | 0504.7 | 10.2 | 34.7 | 11.6 |
| 4995 MANI | 3 | 0503.6 | 0504.7 | 10.2 | 14.9 | 6.2 |
| 4995 CRON | 3 | 0503.5 | 0504.5 | 4 | 7.0 | 4.0 |
| 606 MANI | 4 | 0732.1 | 0732.4 | 0.9 | 37.4 | 5.2 |
| 23 POTS | 5 | 1045.7 | 1045.8 | .4 | 2000.0 | 700.0 |
| 15400 SGMR | 3 | 1059.1 | 1059.7 | 1.6 | 10.7 | 2.5 |
| 8800 SGMR | 1 | 1059.5 | 1059.8 | .9 | 4.7 | 1.0 |
| 4995 CANR | 41 | 1208.5 | 1219 | 10.4 | 82.0 | 24.0 |
| 2695 BOUL | 45 | 1208.5 | 1216 | 13.5 | 4.0 | 1.0 |
| 15400 SGMR | 3 | 1209.8 | 1210.1 | .9 | 12.1 | 3.0 |
| 10700 PENN | 3 | 1209.8 | 1210.2 | 2.1 | 35.2 | 4.9 |
| 9400 HUAN | 3 | 1209.5 | 1210.2 | 1.6 | 41.5 | 13.5 |
| 4995 SGMR | 3 | 1209.8 | 1210.2 | 3.6 | 23.4 | 6.0 |
| 2800 OTTA | 3 | 1209.8 | 1210 | 2 | 23.0 | 5.8 |
| 2700 PENN | 3 | 1209.5 | 1210.1 | 5.4 | 71.4 | 4.0 |
| 2695 CANR | 41 | 1209.5 | 1218 | 92 | 127.0 | 35.0 |
| 2695 SGMR | 4 | 1209.7 | 1210.1 | 1.7 | 23.1 | 6.0 |
| 1420 CANR | 3 | 1209.5 | 1210.5 | 1.5 | 3.0 | 1.0 |
| 1420 BOUL | 45 | 1209.5 | 1216 | 9 | 4.0 | 1.0 |
| 8800 SGMR | 3 | 1210 | 1210.3 | 2.1 | 58.0 | 13.0 |
| 1415 SGMR | 1 | 1210.7 | 1211.3 | 2.3 | 1.4 | .6 |
| 2800 OTTA | 21 | 1215 | 1350 | 340 | 8.2 | 4.8 |
| 15400 SGMR | 4 | 1216.5 | 1218.7 | 5.7 | 78.0 | 20.0 |
| 10700 PENN | 3 | 1216.9 | 1218.7 | 13.2 | 159.0 | 19.4 |
| 9500 BERL | 46 | 1216.5 | 1219.1 | 41 U | 130.0 | |
| 4995 SGMR | 4 | 1216.8 | 1218.8 | 5 | 113.0 | 29.0 |
| 2800 OTTA | 45 | 1216.7 | 1217.5 | 4.2 | 99.0 | 43.0 |
| 2700 PENN | 45 | 1216.5 | 1217.3 | 4.1 | 149.0 | 76.3 |
| 2695 SGMR | 46 | 1216.6 | 1217.3 | 6.9 | 118.0 | 24.0 |
| 1500 BERL | 46 | 1216.5 | 1217.6 | 38 | 47.0 | |
| 1420 CANR | 41 | 1216.5 | 1248.5 | 113.5 | 384.0 | 24.0 |
| 1415 SGMR | 4 | 1216.7 | 1217.5 | 4.7 | 43.4 | 11.0 |
| 9400 HUAN | 45 | 1217.1 | 1218.7 | 2.6 | 152.8 | 51.9 |
| 8800 SGMR | 4 | 1217 | 1218.8 | 4.2 | 219.0 | 50.0 |
| 2700 PENN | 29 | 1220.6 | 1220.6 | 138 | 22.7 | 11.4 |
| 8800 SGMR | 30 | 1221.2 | 1246.6 | 47.5 | 19.6 | 8.0 |
| 4995 SGMR | 30 | 1221.8 | 1221.8 | 78.3 | 9.0 | 4.0 |
| 2800 OTTA | 29 | 1221 | 9 | 9.2 | 4.6 |
| 1415 SGMR | 30 | 1221.4 | 1221.4 | 30.6 | 4.0 | 2.0 |
| 15400 SGMR | 30 | 1222.2 | 1245 | 43.2 | 35.5 | 15.0 |
| 1415 SGMR | 46 | 1229.7 | 1231.6 | 17.3 | 105.0 | 20.0 |
| 2695 SGMR | 45 | 1230.5 | 1235.5 | 17 | 78.0 | 16.0 |
| 960 PENN | 45 | 1230.7 | 1235.6 | 16.1 | 48.2 | 15.4 |
| 930 BORD | 45 | 1230 | 1235.5 | 24 | 78.0 | 15.0 |
| 2800 OTTA | 45 | 1231 | 1235.5 | 17 | 70.0 | 21.4 |
| 2800 OTTA | 45 | 1235 | 2.6 | 70.0 | |
| 2800 OTTA | 45 | 1237.6 | 1239 | 2.4 | 47.0 | |
| 2800 OTTA | 45 | 1240 | 1241 | 8 | 52.0 | |
## SOLAR RADIO EMISSION OUTSTANDING OCCURRENCES
**JULY 26 - AUGUST 14, 1972**
| FREQUENCY STATION | TYPE | STARTING TIME | TIME OF MAXIMUM | DURATION | FLUX DENSITY $10^{-22}$ Wm$^{-2}$ Hz$^{-1}$ |
|-------------------|------|---------------|-----------------|----------|---------------------------------------------|
| | | UT | UT | MINUTES | PEAK |
| 2700 PENN | 45 | 1231.4 | 1235.6 | 18 | 107.0 |
| 606 SGMR | 4 | 1231.2 | 1235.5 | 19 | 66.0 |
| 410 SGMR | 6 | 1231.5 | 1236.1 | 20.8 | 210.0 |
| 245 SGMR | 6 | 1231.2 | 1238.7 | 20.3 | 29.6 |
| 10700 PENN | 3 | 1232.4 | 1239.1 | 10 | 88.1 |
| 8800 SGMR | 45 | 1232.3 | 1239.2 | 14.3 | 123.0 |
| 4995 SGMR | 45 | 1232.8 | 1238.9 | 16.3 | 89.0 |
| 15400 SGMR | 45 | 1233.9 | 1239.6 | 8.6 | 56.0 |
| 9400 HUAN | 45 | 1234.4 | 1238.7 | 9.2 | 101.8 |
| 113 POTS | 45 | 1238.3 | 1241.8 | 5.4 | 700.0 |
| 10700 PENN | 29 | 1242.4 | 1242.4 | 26.7 | 30.8 |
| 4995 BOUL | 3 | 1302 | 1304.5 | 6.5 | 12.0 |
| 2695 BOUL | 3 | 1302.5 | 1303.5 | 1.5 | 4.0 |
| 9400 HUAN | 20 | 1310.4 | 1329.2 | 23.4 | 49.9 |
| 1420 BOUL | 3 | 1310 | 1320.5 | 35.5 | 69.0 |
| 2695 BOUL | 3 | 1312 | 1320.5 | 29.5 | 79.0 |
| 10700 PENN | 20 | 1313 | 1319.6 | 44.8 | 39.7 |
| 4995 SGMR | 3 | 1313.7 | 1319.5 | 19.8 | 55.0 |
| 4995 BOUL | 3 | 1313 | 1319.5 | 31 | 68.0 |
| 2800 OTTA | 3 | 1313 | 1319.6 | 27 | 84.0 |
| 2700 PENN | 3 | 1313.4 | 1319.7 | 30.5 | 125.0 |
| 2695 SGMR | 3 | 1313.4 | 1319.5 | 28.6 | 92.0 |
| 1500 BERL | 4 | 1313 | 1319.9 | 27 | 74.0 |
| 1415 SGMR | 3 | 1313.2 | 1319.9 | 27.7 | 72.0 |
| 960 PENN | 3 | 1313.2 | 1320 | 20.4 | 36.6 |
| 930 BORD | 5 | 1313 | 1320 | 26 | 56.0 |
| 606 SGMR | 20 | 1313.5 | 1321.5 | 21.2 | 23.0 |
| 410 SGMR | 6 | 1313.9 | 1315.7 | 20.1 | 12.2 |
| 15400 SGMR | 20 | 1314.1 | 1319.5 | 17.4 | 14.9 |
| 8800 SGMR | 22 | 1314.3 | 1319 | 19.2 | 56.9 |
| 245 SGMR | 6 | 1314 | 1315.2 | 20.7 | 12.6 |
| 9500 BERL | 46 | 1315 U | 1317.9 | 15 U | 34.0 |
| 1420 BOUL | 45 | 1342 | 1349 | 9 | 348.0 |
| 1500 BERL | 46 | 1343 | 1345.7 | 27 | 360.0 |
| 1415 SGMR | 46 | 1344.3 | 1348 | 20 | 405.0 |
| 2695 SGMR | 20 | 1345 | 1349 | 15.5 | 1.9 |
| 8800 SGMR | 3 | 1349.1 | 1349.2 | 0.6 | 35.0 |
| 4995 SGMR | 1 | 1349 | 1349.1 | 0.2 | 3.9 |
| 1420 BOUL | 45 | 1355 | 1356.5 | 6.5 | 6.0 |
| 4995 CANR | 3 | 1417 | 1419 | 4 | 11.0 |
| 15400 SGMR | 3 | 1418.4 | 1420 | 3.6 | 22.7 |
| 10700 PENN | 3 | 1418.3 | 1420.1 | 9.6 | 27.3 |
| 9500 BERL | 3 | 1418 | 1419.7 | 5 | 29.0 |
| 9400 HUAN | 3 | 1418.4 | 1419.9 | 5.4 | 28.3 |
| 8800 SGMR | 3 | 1418.7 | 1420.1 | 9.2 | 47.8 |
| 4995 SGMR | 1 | 1418.7 | 1420.1 | 4.9 | 9.8 |
| 4995 BOUL | 3 | 1418 | 1419.5 | 3.5 | 11.0 |
| 2695 CANR | 8 | 1418.5 | 1419 | 1 | 8.0 |
| 2695 SGMR | 2 | 1418.8 | 1419.4 | 1.2 | 6.8 |
| 2800 OTTA | 1 | 1419 | 1419.2 | 1 | 2.2 |
| 2695 BOUL | 8 | 1419 | 1419.5 | 1 | 9.0 |
| 1415 SGMR | 1 | 1419 | 1422.1 | 8.6 | 1.6 |
| 1420 BOUL | 3 | 1451.5 | 1454.5 | 8 | 2.0 |
| 2695 CANR | 8 | 1520 | 1521 | 1.5 | 6.0 |
| 1420 CANR | 45 | 1520 | 1521 | 1.5 | 9.0 |
| 2800 OTTA | 20 | 1830 | 1930 | 130 | 2.4 |
---
### Additional Information
- **INT**: Indicates intensity level.
- **REMARKS**: Additional notes or observations.
---
This table provides detailed data on solar radio emissions, including frequency, station type, starting time, maximum time, duration, flux density, peak value, and mean value.
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### JULY 1972
| JUL. 1972 | TIMES OF OBSERVATION | STATION | EVENTS |
|-----------|----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 24 | 0715 | 1839 | WEIS | 1851.4 | 1853.0 | 1 | 1851.4 | 1853.0 | 1 | IIIG |
| | 1231 | 2400 | HARV | 2247 | 2249 | 1 | 2247.3 | 2248.3 | 2 | IIIG |
| | 1200 | 2400 | BOUL | 2247.3 | 2248.3 | 2 | 2247.3 | 2248.3 | 2 | IIIG |
| | 2039 | 2400 | CULG | | | | | | | | | |
| | | | BOUL | | | | | | | | | |
| 25 | 0000 | 0144 | SGMR | 0006.3 | 0006.8 | 2 | 0006.3 | 0008.4 | 2 | III |
| | 0000 | 0230 | HARV | 0006.5 | 0008.5 | 2 | 0015.2 | 0016.0 | 2 | IIIG |
| | 0000 | 0730 | BOUL | 0016.0 | 0017.5 | 1 | 0015.2 | 0016.0 | 2 | IIIG |
| | | | CULG | 0016 | 0017.5 | 1 | 0015.2 | 0016.0 | 2 | IIIG |
| | | | CULG | 0057 | 0057.5 | 1 | 0057.2 | 0057.3 | 1 | IIIG |
| | | | BOUL | 0214 | | | | | | | | |
| | | | CULG | 0550.5 | 0551 | 1 | | | | | | |
| | | | CULG | 0631 | 0632 | 1 | | | | | | |
| | | | CULG | 0638.5 | 0639 | 1 | | | | | | |
| | | | CULG | 0642.5 | | | | | | | | |
| | | | CULG | 0717.5 | 0719.5 | 1 | | | | | | |
| | | | CULG | 1030.7 | 1033.5 | 1 | | | | | | |
| | 0915 | 1840 | WEIS | 1745.2 | 1745.4 | 1 | | | | | | |
| | 1200 | 2400 | BOUL | 1745.4 | 1745.4 | 1 | | | | | | |
| | 1231 | 2400 | HARV | 1808 | 1810 | 2 | 1808 | 1810 | 2 | IIIG |
| | 2040 | 2400 | BOUL | 1808 | 1810 | 2 | 1808 | 1810 | 2 | IIIG |
| 26 | 0000 | 0230 | BOUL | 0234.5 | 0241.5 | 1 | | | | | | |
| | 0000 | 0144 | HARV | 0240.5 | 0241.5 | 1 | | | | | | |
| | 0000 | 0738 | CULG | 0241.5 | 0241.5 | 1 | | | | | | |
| | | | CULG | 0635 | 0636 | 1 | | | | | | |
| | 0424 | 1145 | WEIS | 0703 | | | | | | | | |
| | | | CULG | 1706.3 | 1706.5 | 1 | 1706.3 | 1706.5 | 1 | III |
| | | | CULG | 1728.0 | 1728.5 | 1 | 1728.0 | 1728.5 | 1 | III |
| | | | CULG | 2014.2 | 2017.2 | 1 | 2014.2 | 2017.2 | 1 | IIIG |
| | | | CULG | 2015 | 2017 | 1 | 2015 | 2017 | 1 | IIIG |
| | | | CULG | 2132.5 | 2133.5 | 1 | | | | | | |
| | | | CULG | 2242 | 2244 | 1 | | | | | | |
| | | | CULG | 2248 | | | | | | | | |
| | | | CULG | 2253.5 | 2253.5 | 1 | | | | | | |
| | | | CULG | 2316 | 2318.5 | 2 | | | | | | |
| | | | CULG | 2316 | 2317 | 2 | | | | | | |
| | | | CULG | 2316.1 | 2317.6 | 2 | | | | | | |
| | | | CULG | 2316.1 | 2317.6 | 2 | | | | | | |
| | | | CULG | 2359.5 | 2400.5 | 2 | | | | | | |
| | | | CULG | 2359.6 | 2400.1 | 1 | | | | | | |
| 27 | 0000 | 0144 | HARV | 0109.5 | 0111.5 | 1 | | | | | | |
| | 0000 | 0738 | CULG | 0138.5 | 0143 | 1 | | | | | | |
| | 0000 | 0230 | CULG | 0143 | 0144.5 | 1 | | | | | | |
| | | | CULG | 0147 | | | | | | | | |
| | | | CULG | 0148.5 | 0149.5 | 1 | | | | | | |
| | | | CULG | 0253 | | | | | | | | |
| | | | CULG | 0255.5 | | | | | | | | |
| | | | CULG | 0338.5 | 0339.5 | 1 | | | | | | |
| | | | CULG | 0342 | 0343 | 1 | | | | | | |
| | | | CULG | 0351 | 0352 | 1 | | | | | | |
| | | | CULG | 0427.5 | 0430.5 | 1 | | | | | | |
| | | | CULG | 0502.5 | 0503.5 | 2 | | | | | | |
| | | | CULG | 0509.5 | 0511.5 | 2 | | | | | | |
| | | | CULG | 0510.8 | 0513.1 | 2 | | | | | | |
| | | | CULG | 0512.5 | 0513.5 | 2 | | | | | | |
| | | | CULG | 0516.5 | 0517.5 | 1 | | | | | | |
| | | | CULG | 0519 | 0520 | 1 | | | | | | |
| | | | CULG | 0624 | | | | | | | | |
| | | | CULG | 0630.5 | 0638.5 | 2 | | | | | | |
| | | | CULG | 0633.1 | 0635.5 | 2 | | | | | | |
| | | | CULG | 0638.5 | 0641.5 | 1 | | | | | | |
| | | | CULG | 0639.0 | 0645.0 | 1 | | | | | | |
| | | | CULG | 0642 | 0645.5 | 2 | | | | | | |
| | | | CULG | 0643.5 | 0651 | 1 | | | | | | |
| | | | CULG | 0655.5 | 0659.5 | 1 | | | | | | |
| | | | CULG | 0703.5 | 0706 | 1 | | | | | | |
| | | | CULG | 0712 | | | | | | | | |
| | 0919 | 2407 | SGMR | 0930.8 | 0931.7 | 1 | | | | | | |
| | 1231 | 2400 | HARV | 1901 | 1904 | 2 | 1901 | 1904 | 2 | IIIG |
| | 1200 | 2400 | BOUL | 1901.2 | 1903.9 | 2 | 1901.2 | 1903.9 | 2 | IIIG |
| | 2039 | 2400 | CULG | 2142.5 | 2145.5 | 1 | | | | | | |
| | | | CULG | 2205 | 2212.5 | 1 | | | | | | |
| | | | BOUL | 2206.2 | 2206.6 | 1 | | | | | | |
---
Page 83
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### JULY 1972
| JUL. | TIMES OF OBSERVATION | STATION | EVENTS |
|------|----------------------|---------|--------|
| | | | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND |
| | | | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 27 | | BOUL | 2221.1 | 2223.5 | 2 | 2221.1 | 2223.5 | 2 | IIIG |
| | | CULG | 2221.5 | 2237 | 1 | 2227.9 | 2228.6 | 1 | IIIS |
| | | BOUL | 2227.9 | 2228.6 | 1 | 2227.9 | 2228.6 | 1 | IIIG |
| | | BOUL | 2233.0 | 2233.8 | 1 | 2233.0 | 2233.8 | 1 | III |
| | | BOUL | 2250.5 | 2252 | 1 | 2250.5 | 2252 | 1 | IIIG |
| | | CULG | 2251.1 | 2251.4 | 1 | 2251.1 | 2251.4 | 1 | III |
| | | BOUL | 2255 | | | 2255 | | | IIIB,W |
| | | CULG | 2344 | 2345 | 1 | 2344 | 2345 | 1 | IIIG |
| | | BOUL | 2344.0 | 2345.0 | 1 | 2344.0 | 2345.0 | 1 | IIIG |
| 28 | 0000 | CULG | 0030.5 | 0037 | 2 | 0030.5 | 0037 | 2 | IIIG,G,U |
| | 0000 | BOUL | 0030.8 | 0034.0 | 2 | 0030.8 | 0034.0 | 2 | IIIG |
| | 0000 | HARV | 0035.2 | 0036.7 | 2 | 0035.2 | 0036.7 | 2 | IIIG |
| | 0144 | 0036 | 1 | 0037 | 1 | 0036 | | | IIIG |
| | | BOUL | 0040 | 0041.5 | 1 | 0040 | 0041.5 | 1 | IIIG |
| | | BOUL | 0040.0 | 0041.1 | 1 | 0040.0 | 0041.1 | 1 | IIIG |
| | | HARV | 0123 | 0124 | 2 | 0123 | 0124 | 2 | IIIG,G |
| | | CULG | 0123 | 0126.5 | 1 | 0123 | 0126.5 | 1 | IIIG |
| | | CULG | 0126.5 | 0130 | 3 | 0126.5 | 0130 | 3 | IIIG |
| | | CULG | 0238 | 0238.5 | 1 | 0238 | 0238.5 | 1 | IIIB,W |
| | | WEIS | 0429.5 | | | 0429.5 | | | IIIG |
| | | CULG | 0437.5 | | | 0437.5 | | | IIIG |
| | | CULG | 0444 | 0445 | 1 | 0444 | 0445 | 1 | IIIG |
| | | CULG | 0458.5 | | | 0458.5 | | | IIIG |
| | | CULG | 0518.5 | 0519.5 | 1 | 0518.5 | 0519.5 | 1 | IIIG |
| | | CULG | 0555.5 | | | 0555.5 | | | IIIB,W |
| | | CULG | 0710.5 | | | 0710.5 | | | IIIB |
| | | BOUL | 1321.6 | 1328.2 | 3 | 1321.6 | 1328.2 | 3 | IIIG |
| | | HARV | 1321.6 | 1328.2 | 3 | 1321.6 | 1328.2 | 3 | IIIG |
| | | SGMR | 1322 | 1327 | 1 | 1322 | 1327 | 1 | IIIG |
| | | WEIS | 1322.4 | 1326.0 | 2 | 1322.4 | 1326.0 | 2 | IIIG |
| | | WEIS | 1324.6 | 1324.7 | 3 | 1324.6 | 1324.7 | 3 | IIIG |
| | | WEIS | 1327.0 | 1328.6 | 2 | 1327.0 | 1328.6 | 2 | IIIG |
| | | BOUL | 1332.3 | 1332.4 | 1 | 1332.3 | 1332.4 | 1 | IIIG |
| | | BOUL | 1337.5 | 1343.0 | 1 | 1337.5 | 1343.0 | 1 | IIIG |
| | | BOUL | 1352.5 | 1355.8 | 3 | 1352.5 | 1355.8 | 3 | IIIG |
| | | BOUL | 1352.7 | 1354.5 | 3 | 1352.7 | 1354.5 | 3 | IIIG |
| | | HARV | 1353 | 1354 | 1 | 1353 | 1354 | 1 | IIIG |
| | | BOUL | 1405.0 | 1405.2 | 1 | 1405.0 | 1405.2 | 1 | III |
| | | BOUL | 1430.9 | 1431.1 | 1 | 1430.9 | 1431.1 | 1 | III |
| | | BOUL | 1523.9 | 1524.1 | 1 | 1523.9 | 1524.1 | 1 | III |
| | | BOUL | 1531 | 1532 | 2 | 1531 | 1532 | 2 | IIIG |
| | | WEIS | 1531.1 | 1532.6 | 2 | 1531.1 | 1532.6 | 2 | IIIG |
| | | SGMR | 1531.2 | 1532.1 | 1 | 1531.2 | 1532.1 | 1 | IIIG |
| | | BOUL | 1531.4 | 1532.2 | 2 | 1531.4 | 1532.2 | 2 | III |
| | | BOUL | 1539.6 | 1539.8 | 1 | 1539.6 | 1539.8 | 1 | III |
| | | BOUL | 1545.0 | 1546.2 | 1 | 1545.0 | 1546.2 | 1 | IIIG |
| | | BOUL | 1631.6 | 1631.8 | 1 | 1631.6 | 1631.8 | 1 | III |
| | | BOUL | 1636.4 | 1636.6 | 1 | 1636.4 | 1636.6 | 1 | III |
| | | BOUL | 1654.2 | 1654.9 | 1 | 1654.2 | 1654.9 | 1 | IIIG |
| | | BOUL | 1857 | 1900 | 2 | 1857 | 1900 | 2 | IIIG |
| | | BOUL | 1857.5 | 1906.2 | 1 | 1857.5 | 1906.2 | 1 | IIIG |
| | | BOUL | 1943.8 | 1945.4 | 2 | 1943.8 | 1945.4 | 2 | IIIG |
| | | BOUL | 1944 | 1945 | 3 | 1944 | 1945 | 3 | IIIG |
| | | BOUL | 2003 | 2003 | 3 | 2003 | 2003 | 3 | IIIB |
| | | BOUL | 2041 | 2046 | 2 | 2041 | 2046 | 2 | IIIG |
| | | BOUL | 2041.5 | 2045.6 | 1 | 2041.5 | 2045.6 | 1 | IIIG |
| | | BOUL | 2057 | 2101 | 1 | 2057 | 2101 | 1 | IIIG |
| | | BOUL | 2058 | 2101 | 1 | 2058 | 2101 | 1 | IIIG |
| | | BOUL | 2108.5 | 2400 | 1 | 2108.5 | 2400 | 1 | IIIS |
| | | BOUL | 2115.5 | 2116.5 | 1 | 2115.5 | 2116.5 | 1 | IIIG |
| | | BOUL | 2208.5 | 2212 | 2 | 2208.5 | 2212 | 2 | IIIG |
| | | BOUL | 2208.7 | 2208.9 | 1 | 2208.7 | 2208.9 | 1 | IIIG |
| | | BOUL | 2212.5 | 2214.5 | 2 | 2212.5 | 2214.5 | 2 | IIIG |
| | | BOUL | 2212.7 | 2214.3 | 3 | 2212.7 | 2214.3 | 3 | IIIG |
| | | BOUL | 2213 | 2214 | 2 | 2213 | 2214 | 2 | IIIG |
| | | BOUL | 2231.5 | 2315.5 | 1 | 2231.5 | 2315.5 | 1 | IIIG |
| | | BOUL | 2313.5 | 2315.8 | 2 | 2313.5 | 2315.8 | 2 | IIIG |
| | | BOUL | 2336.4 | 2344.2 | 1 | 2336.4 | 2344.2 | 1 | IIIG |
| | | BOUL | 2343.5 | 2344.5 | 1 | 2343.5 | 2344.5 | 1 | IIIB,W |
| | | BOUL | 2351.3 | 2353.8 | 3 | 2351.3 | 2353.8 | 3 | IIIG |
| | | BOUL | 2351.5 | 2354 | 3 | 2351.5 | 2354 | 3 | IIIG,V |
| | | BOUL | 2352 | 2353 | 2 | 2352 | 2353 | 3 | IIIG |
---
84
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### JULY 1972
| JUL. 1972 | TIMES OF OBSERVATION | STATION | EVENTS |
|-----------|-----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 29 | 0000 | 0738 | CULG | 0000 | 0653 | 1 | 0018.0 | 0018.3 | 2 | 0018.0 | 0018.3 | 2 | IIIS |
| | 0000 | 0230 | CULG | 0018.0 | 0018.3 | 2 | 0018.0 | 0018.3 | 2 | III |
| | | | BOUL | 0032.5 | 0034.5 | 1 | 0032.9 | 0035.2 | 2 | IIIG |
| | | | CULG | 0032.9 | 0035.2 | 2 | 0036 | 0038 | 2 | IIIG |
| | | | BOUL | 0036 | 0038 | 2 | 0036.2 | 0037.9 | 2 | IIIG |
| | | | CULG | 0036.2 | 0037.9 | 2 | 0039.5 | 0044.5 | 2 | IIIGG |
| | | | BOUL | 0039.5 | 0044.5 | 2 | 0039.6 | 0044.9 | 3 | IIIGG |
| | | | CULG | 0039.6 | 0044.9 | 3 | 0048.2 | 0155.3 | 1 | IIIN |
| | | | WEIS | 0048.2 | 0155.3 | 1 | 0225 | 1 | 1 | IIIB |
| | 0425 | 0730 | CULG | 0426.5 | 0428.5 | 1 | 0708 | 0709 | 1 | IIIG |
| | | | CULG | 0708 | 0709 | 1 | FAST DRIFT | | | IIIG |
| | 1200 | 2400 | BOUL | 1222.8 | 1223.0 | 1 | 1222.8 | 1223.0 | 1 | III |
| | 0928 | 2404 | SGMR | 1445.2 | 1445.5 | 1 | 1445.2 | 1445.5 | 1 | III |
| | | | BOUL | 1451.0 | 1451.7 | 1 | 1451.0 | 1451.7 | 1 | IIIG |
| | | | BOUL | 1512.2 | 1512.3 | 1 | 1512.2 | 1512.5 | 1 | III |
| | | | SGMR | 1512.2 | 1512.3 | 1 | 1512.9 | 1513.0 | 2 | III |
| | | | BOUL | 1527.1 | 1527.2 | 1 | 1527.1 | 1527.2 | 1 | III |
| | | | SGMR | 1527.1 | 1527.2 | 1 | 1527.6 | 1527.8 | 1 | III |
| | | | BOUL | 1537.0 | 1551.5 | 2 | 1537.0 | 1551.5 | 2 | IIIGG |
| | | | SGMR | 1537.0 | 1551.5 | 2 | 1538.0 | 1552.0 | 2 | IIIG |
| | 1231 | 2400 | HARV | 1549 | 1552 | 1 | 1550 | 1551 | 1 | IIIGG |
| | | | HARV | 1626 | 1629 | 3 | 1626 | 1627 | 3 | IIIG |
| | | | BOUL | 1626.1 | 1626.2 | 2 | 1626.1 | 1626.6 | 2 | III |
| | | | SGMR | 1626.1 | 1626.2 | 2 | 1626.5 | 1627.0 | 2 | III |
| | | | BOUL | 1638.0 | 1639.2 | 1 | 1638.8 | 1639.2 | 1 | IIIG |
| | | | BOUL | 1652.5 | 1653.0 | 1 | 1652.5 | 1653.0 | 1 | IIIG |
| | | | BOUL | 1710.5 | 1712.8 | 1 | 1710.5 | 1712.8 | 1 | IIIG |
| | | | HARV | 1712 | 1713 | 2 | 1712 | 1713 | 1 | IIIG |
| | | | BOUL | 1727.5 | 1727.6 | 1 | 1727.5 | 1727.6 | 1 | III |
| | | | BOUL | 1811.4 | 1816.1 | 2 | 1811.4 | 1816.1 | 2 | IIIGG |
| | | | HARV | 1812 | 1816 | 2 | 1812 | 1816 | 2 | IIIGG |
| | | | SGMR | 1836.5 | 1846.5 | 3 | 1836.5 | 1846.5 | 3 | IIIGG |
| | | | BOUL | 1839 | 1846 | 3 | 1839 | 1846 | 3 | IIIGG |
| | | | SGMR | 1855 | 1859 | 3 | 1855 | 1859 | 3 | IIIGG |
| | | | BOUL | 1855.2 | 1859.0 | 2 | 1855.2 | 1859.0 | 2 | IIIGG |
| | | | BOUL | 1930.0 | 1930.2 | 1 | 1930.0 | 1930.2 | 1 | III |
| | | | BOUL | 1940.5 | 1940.8 | 1 | 1940.5 | 1940.8 | 1 | III |
| | | | BOUL | 2108.5 | 2109.5 | 1 | 2108.6 | 2109.0 | 1 | III |
| | | | BOUL | 2108.6 | 2109.0 | 1 | 2112.1 | 2112.3 | 1 | III |
| | | | BOUL | 2112 | 2140 | 1 | 2129.4 | 2129.5 | 1 | III |
| | | | BOUL | 2129.5 | 2134 | 1 | 2158.8 | 2201.0 | 1 | IIIG |
| | | | BOUL | 2132 | 2134 | 1 | 2158.8 | 2201.0 | 1 | IIIG |
| | | | BOUL | 2159 | 2201 | 2 | 2200 | 2201 | 1 | IIIG |
| | | | BOUL | 2200 | 2201 | 1 | 2200 | 2201 | 1 | IIIG |
| | | | BOUL | 2200.0 | 2201.0 | 3 | 2200.0 | 2201.0 | 3 | III |
| | | | BOUL | 2212 | 2213 | 1 | 2212.1 | 2212.2 | 1 | III |
| | | | BOUL | 2227 | 2228 | 1 | 2227.2 | 2227.6 | 1 | III |
| | | | BOUL | 2227.2 | 2227.6 | 1 | 2243.0 | 2244.2 | 1 | IIIG |
| | | | BOUL | 2325 | 2325.0 | 1 | 2325.0 | 2325.3 | 1 | IIIB,H |
| 30 | 0000 | 0143 | HARV | 0000 | 0652 | 1 | 0014.2 | 0213.6 | 1 | IIIS |
| | 0000 | 0726 | CULG | 0014.2 | 0213.6 | 1 | 0014.2 | 0213.6 | 1 | IIIN |
| | 0000 | 0230 | CULG | 0117.5 | 0126 | 1 | 0133.5 | 0136 | 1 | IIIGG |
| | | | CULG | 0138.5 | 0139.5 | 1 | 0147 | 0148.5 | 1 | IIIG |
| | | | CULG | 0150 | 0154 | 2 | 0213.5 | 0229 | 1 | IIIG |
| | | | CULG | 0305.5 | 0306 | 1 | 0326.5 | 0329 | 2 | IIIG |
| | | | CULG | 0330 | 0337 | 2 | 0411.5 | 0413 | 1 | IIIG |
| | | | CULG | 0416 | 0418 | 1 | 0526 | 1 | 1 | IIIGG |
| | | | CULG | 0533.5 | 1 | 1 | 0536 | 1 | 1 | IIIG |
| | | | CULG | 0557.5 | 0558 | 1 | 0603.5 | 0604.5 | 1 | IIIB,U |
| | | | CULG | 0619.5 | 0420.5 | 1 | 0418.5 | 0421 | 2 | IIIG |
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### JULY 1972
| JUL. 1972 | TIMES OF OBSERVATION | STATION | EVENTS |
|-----------|-----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 30 | 0927 | 2401 | CULG | 0606.5 | 0611.5 | 1 | IIIGG |
| | 1200 | 2400 | CULG | 0659.5 | 0700.5 | 1 | IIIG, U |
| | | | CULG | 0702 | 0704 | 1 | IIIG |
| | | | CULG | 0709.5 | 0710 | 1 | IIIG, W |
| | | | CULG | 0712 | 0713.5 | 1 | IIIG |
| | | | CULG | 0715 | 0729.5 | 2 | IIIGG, U, V |
| | | | SGMR | 1100.8 | 1101.5 | 1 | III |
| | | | BOUL | 1307.7 | 1308.2 | 2 | III |
| | | | BOUL | 1308.0 | 1308.6 | 2 | III |
| | | | BOUL | 1311.9 | 1312.0 | 1 | III |
| | | | BOUL | 1314.1 | 1314.2 | 1 | III |
| | | | BOUL | 1327.4 | 1327.5 | 1 | III |
| | | | BOUL | 1327.4 | 1327.5 | 1 | III |
| | | | BOUL | 1345.2 | 1345.3 | 1 | III |
| | | | BOUL | 1508.6 | 1508.7 | 1 | III |
| | | | BOUL | 1508.6 | 1508.7 | 1 | III |
| | | | BOUL | 1522.5 | 1523.2 | 1 | IIIG |
| | | | BOUL | 1531.9 | 1532.0 | 1 | III |
| | | | BOUL | 1621.9 | 1622.0 | 1 | III |
| | | | BOUL | 1637.3 | 1637.4 | 1 | III |
| | | | BOUL | 1701.4 | 1706.4 | 2 | IIIGG |
| | | | BOUL | 1701.4 | 1706.4 | 2 | IIIGG |
| | | | HARV | 1705 | 1706 | 3 | IIIGG |
| | | | SGMR | 1734 | 1734 | 3 | IIIB |
| | | | HARV | 1734.0 | 1740.0 | 1 | IIIG |
| | | | BOUL | 1734.1 | 1734.6 | 1 | III |
| | | | BOUL | 1738 | 1740 | 2 | IIIG |
| | | | BOUL | 1831.2 | 1834.2 | 1 | IIIG |
| | | | BOUL | 1836.8 | 1837.3 | 2 | III |
| | | | BOUL | 1836.8 | 1837.3 | 2 | III |
| | | | BOUL | 1838.6 | 1840.5 | 3 | IIIG |
| | | | BOUL | 1838.6 | 1840.5 | 3 | IIIG |
| | | | BOUL | 1840 | 1840 | 3 | IIIG |
| | | | BOUL | 1840 | 1840 | 3 | IIIG |
| | | | BOUL | 1858 | 1902 | 2 | IIIGG, V |
| | | | BOUL | 1858 | 1902 | 2 | IIIGG |
| | | | BOUL | 1858.5 | 1859.8 | 2 | III |
| | | | BOUL | 1858.5 | 1859.8 | 2 | III |
| | | | BOUL | 1934 | 1936 | 3 | IIIGG, V |
| | | | BOUL | 1934.4 | 1935.8 | 2 | IIIG |
| | | | BOUL | 1934.4 | 1935.8 | 2 | IIIG |
| | | | BOUL | 1935.0 | 1935.8 | 2 | V |
| | | | BOUL | 1935.0 | 1935.8 | 2 | IIIG |
| | | | BOUL | 2019.6 | 2020.3 | 2 | III |
| | | | BOUL | 2019.6 | 2020.3 | 2 | III |
| | | | BOUL | 2020 | 2020 | 3 | IIIG |
| | | | BOUL | 2020 | 2020 | 3 | IIIG |
| | | | BOUL | 2023 | 2023 | 3 | IIIB |
| | | | BOUL | 2023.0 | 2023.2 | 2 | IIIG |
| | | | BOUL | 2027.6 | 2028.6 | 2 | IIIG |
| | | | BOUL | 2028 | 2028 | 2 | IIIG |
| | | | BOUL | 2032.8 | 2034.3 | 1 | III |
| | | | BOUL | 2032.8 | 2034.3 | 1 | III |
| | | | BOUL | 2034 | 2033 | 2 | IIIGG |
| | | | BOUL | 2034 | 2033 | 2 | IIIGG |
| | | | BOUL | 2116 | 2116.5 | 1 | IIIG |
| | | | BOUL | 2135.5 | 2136 | 1 | IIIG |
| | | | BOUL | 2137 | 2137.5 | 1 | IIIG |
| | | | BOUL | 2154.5 | 2156.5 | 1 | IIIG, U |
| | | | BOUL | 2155 | 2157 | 2 | IIIG |
| | | | BOUL | 2218.5 | 2219.5 | 1 | IIIG |
| | | | BOUL | 2229 | 2232.5 | 1 | IIIG |
| | | | BOUL | 2241 | 2248 | 1 | IIIG |
| | | | BOUL | 2246.2 | 2250.6 | 1 | IIIGG |
| | | | BOUL | 2248 | 2251 | 2 | IIIGG, U |
| | | | BOUL | 2302 | 2315 | 1 | IIIB |
| | | | BOUL | 2333 | 2334 | 1 | IIIB |
| | | | BOUL | 2339.5 | 2340.5 | 1 | IIIG |
| | | | BOUL | 0032.5 | 0410 | 1 | IIIN, W |
| | | | BOUL | 0058 | 0110 | 1 | IIIGG |
| | | | BOUL | 0111.5 | 0114.5 | 1 | IIIG |
| | | | BOUL | 0117.5 | 0118 | 2 | IIIB, U |
| | | | BOUL | 0127.5 | 0129 | 1 | IIIG, U |
| | | | BOUL | 0128 | 0135.5 | 1 | IIIG |
| | | | BOUL | 0142.5 | 0145.5 | 1 | IIIGG |
| | | | BOUL | 0149.5 | 0151.5 | 1 | IIIGG |
| | | | BOUL | 0155 | 0155.5 | 1 | IIIGG |
| | | | BOUL | 0235.5 | 0236.5 | 1 | IIIG, U |
| | | | BOUL | 0243 | 0244 | 1 | IIIG |
| | | | BOUL | 0311.5 | 0312.5 | 1 | IIIG, U |
| | | | BOUL | 0345.5 | 0347 | 1 | IIIG |
| | | | BOUL | 0416 | 0419 | 2 | IIIGG |
| | | | BOUL | 0424.5 | 0426 | 1 | IIIG, W |
| | | | BOUL | 0441 | 0442 | 1 | IIIG, U |
| | | | BOUL | 0443 | 0444 | 1 | IIIG, U |
| | | | BOUL | 0638 | 0639.5 | 1 | IIIG |
| | | | BOUL | 0642.5 | 0643.5 | 1 | IIIG |
| | | | BOUL | 0644.5 | 0647 | 1 | IIIG |
| | | | BOUL | 1036.0 | 1037.2 | 1 | III |
| | | | BOUL | 1046.7 | 1046.9 | 1 | III |
| | | | BOUL | 1314.2 | 1320.8 | 1 | IIIGG |
| | | | BOUL | 1314.2 | 1320.8 | 1 | IIIGG |
| | | | BOUL | 1318.5 | 1328.0 | 1 | IIIG |
86
### SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
#### JULY 1972
| JUL. 1972 | TIMES OF OBSERVATION | STATION | EVENTS |
|-----------|----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 31 | 1248 | 2400 | HARV | 1325 | 1327 | 1 | 1325.4 | 1327.1 | 1 | 1325.4 | 1327.1 | 1 | IIIG |
| | 0922 | 1826 | BOUL | 1325.4 | 1327.1 | 1 | 1325.4 | 1327.1 | 1 | 1325.4 | 1327.1 | 1 | IIIG |
| | | | WEIS | 1622.1 | 1622.4 | 1 | 1622.1 | 1622.4 | 1 | 1622.1 | 1622.4 | 1 | IIIG |
| | | | HARV | 1636 | 1637 | 2 | 1636 | 1637 | 2 | 1636 | 1637 | 2 | IIIG |
| | | | SGMR | 1636.0 | 1637.5 | 2 | 1636.0 | 1637.5 | 2 | 1636.0 | 1637.5 | 2 | IIIG |
| | | | BOUL | 1636.1 | 1637.0 | 1 | 1636.1 | 1637.0 | 1 | 1636.1 | 1637.0 | 1 | IIIG |
| | | | WEIS | 1640.1 | 1645.9 | 1 | 1640.1 | 1645.9 | 1 | 1640.1 | 1645.9 | 1 | IIIGG |
| | | | BOUL | 1650.3 | 1650.4 | 1 | 1650.3 | 1650.4 | 1 | 1650.3 | 1650.4 | 1 | III |
| | | | BOUL | 1937.2 | 1937.6 | 1 | 1937.2 | 1937.6 | 1 | 1937.2 | 1937.6 | 1 | III |
| | | | BOUL | 2014.0 | 2014.2 | 1 | 2014.0 | 2014.2 | 1 | 2014.0 | 2014.2 | 1 | III |
| | | | BOUL | 2054.5 | 2055.5 | 1 | 2054.5 | 2055.5 | 1 | 2054.5 | 2055.5 | 1 | III |
| | | | BOUL | 2054.8 | 2055.2 | 1 | 2054.8 | 2055.2 | 1 | 2054.8 | 2055.2 | 1 | III |
| | | | BOUL | 2055 | 2055.2 | 1 | 2055 | 2055.2 | 1 | 2055 | 2055.2 | 1 | III |
| | | | BOUL | 2055.5 | 2140.5 | 1 | 2055.5 | 2140.5 | 1 | 2055.5 | 2140.5 | 1 | III |
| | | | BOUL | 2126 | 2330 | 1 | 2126 | 2330 | 1 | 2126 | 2330 | 1 | III |
| | | | BOUL | 2135.5 | 2146 | 1 | 2135.5 | 2146 | 1 | 2135.5 | 2146 | 1 | III |
| | | | BOUL | 2207.5 | 2208 | 1 | 2207.5 | 2208 | 1 | 2207.5 | 2208 | 1 | III |
| | | | BOUL | 2236 | 2237 | 1 | 2236 | 2237 | 1 | 2236 | 2237 | 1 | III |
The symbols used in connection with the spectral type in describing the important bursts are as follows:
- **B** = Single burst
- **G** = Small group (< 10) of bursts
- **GG** = Large group (> 10) of bursts
- **C** = Underlying continuum (particularly with type I)
- **S** = Storm in the sense of intermittent but apparently connected activity
- **N** = Intermittent activity in this period
- **U** = U-shaped burst of Type III
- **RS** = Reverse slope burst
- **DP** = Drifting pairs
- **DC** = Drifting Chains
- **H** = Herringbone
- **W** = Weak
- **P** = Pulsations
- **CONT** = Continuum
- **UNCLF** = Unclassified activity
Note: Reports not received from Clark Lake Radio Observatory at time of publication.
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### AUGUST 1972
| AUG. 1972 | TIMES OF OBSERVATION | STATION | EVENTS |
|-----------|----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 01 | 0000 | 0738 | CULG | 0125 | 0127 | 1 | 0125.2 | 0126.0 | 1 | 0125.2 | 0126.0 | 1 | IIIG |
| | 0000 | 0200 | BOUL | 0125.2 | 0126.0 | 1 | 0125.2 | 0126.0 | 1 | IIIG |
| | 0000 | 0141 | CULG | 0128.5 | 0133 | 1 | 0128.5 | 0131.8 | 2 | 0128.6 | 0131.8 | 2 | IIIGG |
| | | | HARV | 0129 | 0132 | 1 | 0130 | 0131 | 1 | IIIGG |
| | | | CULG | 0145.5 | 0147.5 | 1 | 0200.5 | 0224 | 1 | IIIG,RS |
| | | | CULG | 0427 | 0433 | 1 | 0425.5 | 0441 | 2 | IIIG,RS |
| | | | CULG | 0447.5 | 0542 | 1 | 0506.5 | 0719 | 1 | IIIN,W |
| | | | CULG | 0745.1 | 0745.4 | 1 | 0838.0 | 0841.6 | 3 | IIIB |
| | | | WEIS | 0907.1 | 0908.2 | 2 | 1147.6 | 1151.4 | 3 | IIIGG,DP |
| | | | WEIS | 1148.2 | 1151.5 | 3 | 1210.3 | 1211.0 | 2 | IIIGG,DPRS|
| | | | WEIS | 1226.0 | 1226.2 | 1 | 1306 | 1307 | 2 | III |
| | | | WEIS | 1306.0 | 1306.8H| 2 | 1306.0 | 1306.8H | 2 | IIIG |
| | | | WEIS | 1306.4 | 1307.1 | 3 | 1306.5 | 1307.2 | 2 | IIIG |
| | | | WEIS | 1320.6 | 1321.7 | 1 | 1320.6 | 1321.7 | 1 | IIIG |
| | | | WEIS | 1350.8 | 1350.9 | 1 | 1350.8 | 1350.9 | 1 | III |
| | | | WEIS | 1400.2 | 1400.5 | 1 | 1400.2 | 1400.5 | 1 | IIY |
| | | | WEIS | 1424.8 | 1424.9 | 1 | 1424.8 | 1424.9 | 1 | III |
| | | | WEIS | 1535 | 1539 | 2 | 1535 | 1539 | 2 | IIIGG |
| | | | WEIS | 1535.1 | 1535.3 | 1 | 1535.1 | 1535.3 | 1 | III |
| | | | WEIS | 1535.2 | 1538.4 | 2 | 1535.4 | 1539.1 | 2 | IIIG |
| | | | WEIS | 1536.5 | 1539.5 | 3 | 1536.5 | 1539.5 | 1 | IIIG |
| | | | WEIS | 1540.5 | 1542.2 | 1 | 1540.5 | 1542.2 | 1 | III |
| | | | WEIS | 1542 | 1543 | 1 | 1629.6 | 1629.7 | 1 | IIIG |
| | | | WEIS | 1629.6 | 1629.7 | 1 | 1629.6 | 1629.7 | 1 | III |
| | | | WEIS | 1659.0 | 1659.1 | 1 | 1659.0 | 1659.1 | 1 | III |
| | | | WEIS | 1711.0 | 1711.6 | 2 | 1711.0 | 1711.6 | 2 | III |
| | | | WEIS | 1805.1 | 1806.1 | 1 | 1805.1 | 1806.1 | 1 | IIIG |
| | | | WEIS | 1941.1 | 1941.5 | 2 | 1941.1 | 1941.5 | 2 | III |
| | | | WEIS | 2030.0 | 2328.0 | 1 | 2030.0 | 2328.0 | 1 | CCNT |
| | | | WEIS | 2052.5 | 2344.5 | 1 | 2055.5 | 2400 | 1 | I |
| | | | WEIS | 2117.8 | 2125.8 | 3 | 2117.8 | 2125.8 | 3 | IIIS |
| | | | WEIS | 2119 | 2125.5 | 1 | 2117.5 | 2126.5 | 3 | IIIGG |
| | | | WEIS | 2119 | 2125 | 2 | 2118 | 2126 | 3 | IIIG |
| | | | WEIS | 2139.5 | 2142 | 1 | 2140.0 | 2140.8 | 2 | IIIG |
| | | | WEIS | 2238.4 | 2239.4 | 1 | 2238.4 | 2239.4 | 1 | IIIG |
| | | | WEIS | 0000 | 0325.5 | 1 | 0003 | 0300 | 1 | IIIS |
| | | | WEIS | 0027 | 0030.5 | 1 | 0039.5 | 0041 | 1 | IS,CONT |
| | | | WEIS | 0040 | 0041 | 1 | 0050 | 0136 | 1 | IIIG |
| | | | WEIS | 0111 | 0112 | 2 | 0111 | 0112 | 2 | IIIG |
| | | | WEIS | 0227 | 0228.5 | 1 | 0248.5 | 0250 | 3 | IIIG |
| | | | WEIS | 0300 | 0300 | 2 | 0312 | 0314.5 | 1 | IIIGG,RS |
| | | | WEIS | 0326 | 0722 | 2 | 0326 | 0450 | 1 | IIIGG,V |
| | | | WEIS | 0443 | 0545 | 1 | 0443.0 | 0625.0 | 1 | IIIG |
| | | | WEIS | 0450 | 0738 | 2 | 1215.0 | 2033.0 | 2 | IIIG |
| | | | WEIS | 1250 | 2023 | 1 | 1423.0 | 1545.0 | 2 | IIIGG |
| | | | WEIS | 1429 | 1431 | 2 | 1429.5 | 1531.5 | 2 | IIIG |
| | | | WEIS | 1457.9 | 1500.4 | 2 | 1459 | 1500 | 2 | IIIGG,DP |
| | | | WEIS | 1506 | 1511 | 1 | 1506.5 | 1510.0 | 1 | IIIGG |
| | | | WEIS | 1524 | 1526 | 2 | 1524.0 | 1525.5 | 2 | IIIGG |
| | | | WEIS | 1530 | 1700 | 1 | 1530 | 1700 | 1 | IIIN,RS |
| | | | WEIS | 1700 | 1743 | 2 | 1700 | 1743 | 2 | IIIS,RS |
| | | | WEIS | 1728.2 | 1728.4 | 2 | 1735.4 | 1735.7 | 1 | IIIG,DP |
| | | | WEIS | 1801 | 1806 | 3 | 1801 | 1806 | 3 | IIIB |
---
88
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### AUGUST 1972
| TIMES OF OBSERVATION | STATION | EVENTS |
|----------------------|---------|--------|
| AUG. 1972 | | |
| START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | SPECTRAL TYPE |
| 02 | | | | | | | | | | | | |
| 2050 | 2400 | 3 | 2050 | 2320 | 3 | 2050 | 2330 | 3 | 2050 | 2400 | 3 | CCNT |
| 2058.5 | 2100 | 1 | 2149 | 2310 | 3 | 2151 | 2250 | 3 | 2140 | 2245 | 3 | IIIG |
| 2253 | 2254.5 | 1 | 2253 | 2254.5 | 1 | 2254 | 2306 | 1 | 2253 | 2254 | 3 | IIIG |
| 2332 | 2339 | 3 | 2332 | 2339 | 3 | 2334 | 2336 | 2 | 2332 | 2339 | 3 | IIIG |
| 2333.5 | 2337.5 | 1 | 2333.5 | 2337.5 | 1 | 2334 | 2336 | 2 | 2333.5 | 2337.5 | 1 | IIIG |
| 03 | 0000 | 0728 | 0000 | 0728 | 1 | 0000 | 0726 | 1 | 0000 | 0728 | 3 | CCNT |
| 0000 | 0230 | 0140 | 0000 | 0135 | 2 | 0000 | 0140 | 2 | 0000 | 0135 | 2 | IIIS |
| 0443 | 0908 | 0159 | 0159 | 0240 | 2 | 0233 | 0238 | 2 | 0440 | 0442 | 1 | IIIG |
| 0913 | 1816 | 0931 | 0931 | 2356 | 3 | 0931.0 | 2356.0 | 2 | 0913 | 1816 | 2 | IIIG |
| 1200 | 1629 | 1249 | 1249 | 2400 | 3 | 1203.0 | 2400.0 | 3 | 1203.0 | 2400.0 | 3 | IIIG |
| 1637 | 2100 | 1258 | 1258 | 2255 | 1 | 1524.2 | 1526.6 | 2 | 1524.2 | 1526.6 | 2 | IIIS |
| 2045 | 2400 | 2110 | 2110 | 0000 | 1 | 2112 | 2358.5 | 1 | 2112 | 2358.5 | 1 | IIIS |
| 04 | 0000 | 0730 | 0000 | 0730 | 1 | 0000 | 0730 | 1 | 0000 | 0730 | 1 | IIIS |
| 0000 | 0230 | 0138 | 0000 | 0135 | 1 | 0000 | 0135 | 2 | 0000 | 0135 | 2 | IIIS |
| 0442 | 1332 | 0612 | 0612 | 0613 | 1 | 0612 | 0613 | 1 | 0612 | 0613 | 1 | IIIS |
| 0947 | 2357 | 1200 | 1200 | 1852 | 3 | 1145.0 | 1156.0 | 3 | 1145.0 | 1156.0 | 3 | IIIG |
| 1249 | 2400 | 1304 | 1304 | 1305 | 1 | 1304 | 1305 | 1 | 1304 | 1305 | 1 | IIIG |
| 1315 | 1338 | 1315 | 1315 | 1328 | 2 | 1315 | 1328 | 2 | 1315 | 1328 | 2 | IIIG |
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### AUGUST 1972
| TIMES OF OBSERVATION | STATION | EVENTS |
|----------------------|---------|--------|
| | | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND |
| | | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 04 1335 1917 WEIS | | 1335.0 | 1800.0 | 2 | 1340.0 | 2200.0 | 2 | IS, CONT |
| | | 1404.2 | 1405.5 | 1 | 1424 | 1427 | 1 | CCNT |
| | | 1424 | 1427 | 2 | 1424 | 1427 | 2 | IIIB, RS |
| | | 1514 | 1518 | 3 | 1514 | 1518 | 3 | IIIG, RS |
| | | 2045 | 2400 | 2 | 2045 | 2400 | 1 | IIIGG |
| | | 2115 | 2400 | 1 | 2130 | 2131.5 | 1 | IIIG, DP |
| | | 2136 | 2142 | 1 | 2149.5 | 2159.5 | 1 | IIIGG, DP |
| | | 2319.5 | 2326 | 1 | 2326 | | | IIIGG |
| 05 0000 0730 CULG | | 0000 | 0730 | 1 | 0000 | 0730 | 2 | CCNT |
| | | 0000 | 0730 | 1 | 0000 | 0730 | 1 | IS |
| | | 0000 | 0135 | 1 | 0000 | 0135 | 1 | IIIS |
| | | 0000 | 0147.0 | 3 | 0000.0 | 0147.0 | 3 | IN |
| | | 0136.5 | 0138 | 1 | 0138 | 0234.5 | 2 | IIIGG |
| | | 0228.5 | 0234.5 | 3 | 0226 | 0234.5 | 2 | IIIG |
| | | 0236 | 0242 | 3 | 0236 | 0242.5 | 3 | IIIGG |
| | | 0243 | 0246.5 | 1 | 0243 | 0246.5 | 1 | IIIGG |
| | | 0255 | 0306 | 1 | 0444.0 | 1015.0 | 1 | IIIG |
| | | 0514 | 0518 | 1 | 0522.2 | 0524.2 | 2 | IIIGG |
| | | 0522.5 | 0525.5 | 3 | 0525.5 | 0536 | 1 | IIIG |
| | | 0628.5 | 0629.0 | 1 | 0628.7 | 0638.5 | 1 | IIIB |
| | | 0637 | 0705 | 1 | 0702.1 | 0704.8 | 1 | IIIG |
| | | 0704.5 | 1 | | 0704.5 | 0712.5 | 1 | IIIG |
| | | 0711.5 | 0712.2 | 1 | 0810.9 | 0811.4 | 1 | IIIG |
| | | 0817.0 | 0818.6 | 2 | 0913.9 | 0914.3 | 1 | IIIG |
| | | 1026.5 | 1652.0 | 1 | 1117.5 | 1118.7 | 2 | CCNT |
| | | 1117.5 | 1118.7 | 2 | 1117.8 | 1118.8 | 2 | IS |
| | | 1122.2 | 1123.8 | 1 | 1225.0 | 2400.0 | 2 | IIIG |
| | | 1225.0 | 2400.0 | 2 | 1225.0 | 2400.0 | 2 | CCNT |
| | | 1307 | 1308 | 2 | 1307.0 | 1308.0 | 2 | IIIG |
| | | 1444 | 2141 | 1 | 1513 | 1514 | 1 | III |
| | | 1513 | 1514 | 2 | 1513.0 | 1514.2 | 2 | IIIG |
| | | 1513.2 | 1514.3 | 2 | 1702 | 2027 | 1 | IIIN, RS |
| | | 2027 | 2117 | 2 | 2027 | 2027.6 | 2 | IIIS |
| | | 2045 | 2400 | 1 | 2045 | 2400 | 1 | IIIG |
| | | 2106.5 | 2108 | 1 | 2332 | 2334 | 1 | IIIG |
| | | 2334.5 | 2336.5 | 1 | 2339 | 2340.5 | 1 | IIIG |
| | | 2357.5 | 2359 | 1 | 2359 | | | IIIG |
| 06 0000 0737 CULG | | 0000 | 0728.5 | 1 | 0000 | 0643 | 1 | IS |
| | | 0000 | 0147.0 | 2 | 0000.0 | 0147.0 | 2 | IIIS |
| | | 0043.5 | 0044.5 | 1 | 0046.5 | 0047.5 | 1 | CCNT |
| | | 0046.5 | 0047.5 | 1 | 0048.5 | 0052.5 | 1 | IIIG |
| | | 0056 | 0059.5 | 2 | 0057 | 0059 | 2 | IIIGG |
| | | 0111 | 0114 | 1 | 0315 | 0316 | 2 | IIIGG |
| | | 0315 | 0316 | 2 | 0318 | 0319 | 2 | IIIG |
| | | 0444.0 | 0555.0 | 2 | 0529.5 | 0531 | 1 | IIIG |
| | | 0645 | 0654.5 | 2 | 0753.0 | 1645.0 | 2 | IIIG |
| | | 0920.5 | 0925.2 | 3 | 1213.0 | 2400.0 | 1 | IIIG |
| | | 1224.5 | 1228.0 | 2 | 1224.9 | 1226.9 | 1 | IIIG |
---
90
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### AUGUST 1972
| AUG. 1972 | TIMES OF OBSERVATION | STATION | EVENTS |
|-----------|----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 06 | 2040 | 2400 | SGMR | 1520.0 | 1959.0 | 1 | 1510.0 | 1510.8 | 1 | III |
| | 2014 | 2400 | BOUL | 2040 | 2400 | 1 | 1535.0 | 1535.8 | 1 | IS |
| | | | SGMR | 2129 | 2400 | 1 | | | | III |
| | | | CULG | 2102 | 2357.5 | 1 | | | | IS, CONT |
| | | | HARV | 2121.5 | 2127.5 | 1 | | | | IN |
| | | | CULG | 2222.5 | 2230.5 | 1 | | | | IIIN |
| | | | CULG | | | | | | | IIIS,W |
| | | | CULG | | | | | | | IIIS,W |
| 07 | 0000 | 0737 | CULG | 0000 | 0723.5 | 1 | | | | IS |
| | 0000 | 0137 | HARV | 0000.0 | 0142.0 | 1 | 0000.0 | 0142.0 | 1 | CCNT |
| | 0000 | 0230 | BOUL | 0036 | 0652 | 1 | | | | IIIN |
| | 0443 | 1250 | CULG | 0445.0 | 1250.0 | 2 | | | | IN |
| | | | WEIS | 0451 | | | | | | IS |
| | | | CULG | 0457 | 0457.5 | 1 | | | | IIIB |
| | | | CULG | 0516 | 0519.5 | 1 | | | | IIIC |
| | | | WEIS | 0635.9 | 0636.2 | 1 | | | | IIIGG |
| | | | WEIS | 1016.7 | 1018.6 | 2 | | | | III |
| | | | WEIS | 1102.9 | 1103.1 | 1 | | | | IIIG |
| | 1200 | 0000 | BOUL | 1222.4 | 1320.0 | 1 | | | | IIIB |
| | 1249 | 2400 | HARV | 1249 | 1613 | 1 | | | | IV |
| | 1257 | 1638 | WEIS | 1257.0 | 1622.0 | 2 | | | | I |
| | | | BOUL | 1259.4 | 1259.6 | 1 | | | | IS |
| | | | WEIS | 1320.2 | 1325.0 | 1 | 1320.2 | 1325.0 | 1 | IIIB |
| | | | BOUL | 1328.9 | 1338.0 | 1 | | | | III |
| | | | BOUL | 1329.0 | 1329.5t| 1 | 1329.0 | 1329.5 | 1 | IIIGG |
| | | | BOUL | 1432.0 | 1432.8 | 1 | 1432.0 | 1432.8 | 1 | III |
| | | | BOUL | 1432.8 | 1439.1 | 1 | 1432.8 | 1439.1 | 1 | IIIG |
| | | | BOUL | 1503.3 | 1630.0 | 3 | 1503.3 | 1630.0 | 3 | IV |
| | 0923 | 2351 | HARV | 1511.1 | 1530.0 | 3 | 1512.0 | 1514.0 | 2 | IVP |
| | | | WEIS | 1513 | 1521 | 3 | 1517 | 1521 | 2 | IIIGG |
| | | | SGMR | 1517 | 1540 | 3 | 1517 | 1540 | 3 | IIIG |
| | | | HARV | 1518.7 | 1548.9 | 3 | 1518.7 | 1548.9 | 3 | IIIGG,V |
| | | | WEIS | 1518.8 | 1614 | 3 | 1521 | 1614 | 3 | IV |
| | | | HARV | 1520.0 | 1528.0 | 3 | 1520.0 | 1528.0 | 3 | IVP |
| | | | BOUL | 1528.0 | 1531.0 | 3 | 1528.0 | 1531.0 | 3 | II |
| | | | BOUL | 1531.8 | 1537.6 | 3 | 1531.8 | 1537.6 | 3 | II |
| | | | BOUL | 1609 | 1635 | 1 | 1609 | 1635 | 1 | II |
| | | | HARV | 1610.4 | 1614.9 | 2 | 1610.4 | 1614.9 | 2 | II |
| | | | WEIS | 1630.0 | 0137.0 | 1 | 1630.0 | 0137.0 | 1 | II |
| | | | BOUL | 1631 | 1825 | 2 | 1631 | 1825 | 2 | II |
| | | | HARV | 1631.4 | 1635.0 | 1 | 1631.4 | 1635.0 | 1 | II |
| | 1642 | 1807 | 1756 | 1802 | 1756 | 2 | 1802 | 1756 | 2 | IVP |
| | 1946 | 1951 | 1756 | 1802 | 1756 | 2 | 1802 | 1756 | 2 | IIIGG |
| | 2038 | 2400 | 2028 | 2030 | 2028 | 1 | 2030 | 2028 | 1 | IVP |
| | | | CULG | 2045.5 | 2352.5 | 1 | 2045.5 | 2352.5 | 1 | IIIGG |
| | | | CULG | 2054.5 | 2147.5 | 1 | 2054.5 | 2147.5 | 1 | IIIGN,W |
| | | | CULG | 2102.5 | 2106 | 1 | 2102.5 | 2106 | 1 | IW |
| | | | CULG | 2355 | 2358.5 | 1 | 2355 | 2358.5 | 1 | IIIGG |
| | | | CULG | 2358.5 | | | | | | IIIGG,U |
| 08 | 0000 | 0200 | BOUL | 0000.5 | 0130.5 | 1 | 0000.5 | 0130.5 | 1 | IIIS,W |
| | 0000 | 0136 | HARV | 0140.5 | 0737 | 1 | 0140.5 | 0737 | 1 | IIIN |
| | 0000 | 0737 | CULG | 0150 | 0152.5 | 1 | 0150 | 0152.5 | 1 | IIIG,U |
| | | | CULG | 0335 | 0337 | 1 | 0335 | 0337 | 1 | IIIGG |
| | | | CULG | 0608.5 | 0610.5 | 1 | 0608.5 | 0610.5 | 1 | IIIG,V |
| | | | CULG | 0646.5 | 0652.5 | 2 | 0646.5 | 0652.5 | 2 | IIIGG |
| | | | CULG | 1240.1 | 1240.4 | 1 | 1240.1 | 1240.4 | 1 | IIIG |
| | | | CULG | 1300.0 | 1302.5 | 1 | 1300.0 | 1302.5 | 1 | CCNT |
| | | | CULG | 1300.0 | 1302.5 | 1 | 1300.0 | 1302.5 | 1 | IIIG |
| | | | CULG | 1435.8 | 1436.3 | 1 | 1435.8 | 1436.3 | 1 | III |
| | | | CULG | 1755.0 | 1755.3 | 1 | 1755.0 | 1755.3 | 1 | III |
| | | | CULG | 1800.0 | 1800.7 | 1 | 1800.0 | 1800.7 | 1 | III |
| | | | CULG | 2034.1 | 2024.3 | 1 | 2034.1 | 2024.3 | 1 | III |
| | | | CULG | 2046.0 | 2046.1 | 1 | 2046.0 | 2046.1 | 1 | III |
| | | | CULG | 2052.0 | 2052.3 | 1 | 2052.0 | 2052.3 | 1 | III |
| | | | CULG | 2112.5 | 2112.6 | 1 | 2112.5 | 2112.6 | 1 | III |
| | | | CULG | 2147.0 | 2147.1 | 1 | 2147.0 | 2147.1 | 1 | III |
| | | | CULG | 2153.0 | 2153.2 | 1 | 2153.0 | 2153.2 | 1 | III |
| | | | CULG | 2157.7 | 2157.8 | 1 | 2157.7 | 2157.8 | 1 | III |
| | | | CULG | 2235.0 | 2235.4 | 1 | 2235.0 | 2235.4 | 1 | III |
| 09 | 0000 | 0135 | HARV | 0013.5 | 0717.5 | 1 | 0000.0 | 0126.2 | 1 | CCNT |
| | 0000 | 0200 | BOUL | 0033.6 | 0033.7 | 1 | 0033.6 | 0033.7 | 1 | III |
| | 0000 | 0737 | CULG | | | | | | | III |
---
91
## SOLAR RADIO EMISSION
### SPECTRAL OBSERVATIONS
#### AUGUST 1972
| AUG. | TIMES OF OBSERVATION | STATION | EVENTS |
|------|----------------------|---------|--------|
| | START UT | END UT | CENTIMETRIC BAND | DECIMETRIC BAND | METRIC BAND | DEKAMETRIC BAND | SPECTRAL TYPE |
| | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 09 | 0445 | 1100 | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | CULG | WEIS | WEIS | HARV | 1023.0 | 1155.3 | 1 | 1105.0 | 1700.0 | 1 | 0039.7 | 0039.8 | 1 | III |
| | 1249 | 2400 | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | 1329 | 1824 | 1 | 1339.0 | 1339.1 | 1 | 1339.0 | 1339.1 | 1 | III |
| | 1200 | 0000 | SGMR | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | 0919 | 2348 | 1 | 1848.3 | 1848.5 | 1 | 1848.3 | 1848.5 | 1 | III |
| | 2039 | 2400 | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | 2305 | 2305.5 | 1 | 2308 | 2309.5 | 1 | 2308.0 | 2309.5 | 2 | III |
| | 10 | 0000 | BOUL' | HARV | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | 0447 | 1735 | 1 | 0726.5 | 0726.5 | 1 | 0741.5 | 1 | IIIB |
| | 0952 | 2347 | SGMR | HARV | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | 1250 | 2118 | 1 | 1250 | 2118 | 1 | 1718.5 | 1718.7 | 1 | III |
| | 1249 | 2400 | HARV | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | 2049 | 2051 | 2 | 2313.5 | 1 | 2055.0 | 2059.1 | 2 | IIIG |
| | 1200 | 2400 | CULG | HARV | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | 2334 | 2353 | 2 | 2052.5 | 2400 | 1 | 1231.0 | 1233.0 | 2 | III |
| | 11 | 0000 | CULG | HARV | CULG | CULG | CULG | CULG | CULG | CULG | CULG | CULG | 0000 | 0126 | 1 | 0003.5 | 0131.0 | 2 | 0003.5 | 0131.0 | 2 | IV |
| | 0658 | 1809 | WEIS | SGMR | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | 1231.0 | 1233.0 | 2 | 1231.0 | 1233.0 | 2 | III |
| | 0936 | 2346 | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | 1235.3 | 1235.6 | 1 | 1235.3 | 1235.6 | 1 | III |
| | 1249 | 2400 | HARV | WEIS | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | BOUL' | 1300 | 1305 | 1 | 1300 | 1305 | 1 | UNCLF |
92
## SOLAR RADIO EMISSION SPECTRAL OBSERVATIONS
### AUGUST 1972
| TIMES OF OBSERVATION | STATION | EVENTS |
|----------------------|---------|--------|
| **CENTIMETRIC BAND** | **DECIMETRIC BAND** | **METRIC BAND** | **DEKAMETRIC BAND** |
| START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. | START UT | END UT | INT. |
| 11 2037 2400 | CULG | 2047 2353 | 2046.5 2400 | 2141 2143 | 1 | 2141.0 2142.0 | 2319 2319.5 | 1 | 2350.5 2351.5 | 1 | IS, W |
| 12 0000 0200 | BOUL | 0009 0129 | 0000 0420 | 0045.5 0045.8 | 1 | 0056.0 0059.0 | 0102.1 0103.2 | 1 | 0116.3 0116.5 | 1 | IN |
| 0000 0130 | HARV | 0037 0237.5 | 0000 0420 | 0045.5 0045.8 | 1 | 0056.0 0059.0 | 0102.1 0103.2 | 1 | 0116.3 0116.5 | 1 | III |
| 0000 0737 | CULG | 0313 1 | 0313 0313.5 | 1 | 0316 0317.5 | 1 | 0420.5 0711.5 | 1 | 0515.0 0800.0 | 2 | IS |
| 0450 0826 | WEIS | 0421 0730 | 0420 0730 | 0703 0703.5 | 2 | 0714 0714.5 | 1 | 0758.8 0759.3 | 1 | IIIG |
| 0833 1809 | WEIS | 1253 1906 | 1249 1901 | 1301.4 1302.1 | 1 | 1314.1 1317.0 | 1 | 1402.9 1403.4 | 2 | 1533.3 1533.4 | 1 | IIIG |
| 0938 2348 | SGMR | 1253 1906 | 1249 1901 | 1301.4 1302.1 | 1 | 1314.1 1317.0 | 1 | 1402.9 1403.4 | 2 | 1533.3 1533.4 | 1 | IIIG |
| 1249 2400 | HARV | 1253 1906 | 1249 1901 | 1301.4 1302.1 | 1 | 1314.1 1317.0 | 1 | 1402.9 1403.4 | 2 | 1533.3 1533.4 | 1 | IIIG |
| 1200 0000 | BOUL | 2037 2400 | 2042.5 2240.0 | 2 | 2052.5 2240.0 | 2 | IV |
| 2037 2400 | CULG | 2042.5 2240.0 | 2 | 2052.5 2240.0 | 2 | IV |
| 13 0000 0736 | CULG | 0000 0117 | 0000 0120 | 0020 0050 | 1 | 0057 0111 | 1 | 0248.5 0354 | 1 | 0404 0627 | 1 | IIIN, W |
| 0000 0129 | HARV | 0408 0725 | 0500 0729 | 0817.6 0817.9 | 1 | 1208.0 1331.0 | 1 | 1249 1540 | 1 | 1403.2 1403.3 | 1 | IIIG, RS |
| 0450 1810 | WEIS | 0500 0729 | 0817.6 0817.9 | 1 | 1208.0 1331.0 | 1 | 1249 1540 | 1 | 1403.2 1403.3 | 1 | IIIG, RS |
| 1249 2400 | HARV | 0500 0729 | 0817.6 0817.9 | 1 | 1208.0 1331.0 | 1 | 1249 1540 | 1 | 1403.2 1403.3 | 1 | IIIG, RS |
| 0926 2337 | SGMR | 0500 0729 | 0817.6 0817.9 | 1 | 1208.0 1331.0 | 1 | 1249 1540 | 1 | 1403.2 1403.3 | 1 | IIIG, RS |
| 2037 2400 | CULG | 0500 0729 | 0817.6 0817.9 | 1 | 1208.0 1331.0 | 1 | 1249 1540 | 1 | 1403.2 1403.3 | 1 | IIIG, RS |
| 14 0000 0128 | HARV | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 0000 0200 | BOUL | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 0000 0735 | CULG | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 0927 2350 | SGMR | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 0450 1802 | WEIS | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 1249 2400 | HARV | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 1200 0000 | BOUL | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 2105 2400 | CULG | 0300 0555 | 0000.0 0130.0 | 1 | 0000 0731 | 1 | 0519.5 0521 | 1 | 0642 0644 | 1 | 1156.9 1157.3 | 1 | IIIG, U |
| 15 0000 0127 | HARV | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 0000 0200 | BOUL | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 0000 0329 | CULG | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 0331 0736 | CULG | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 0455 0915 | WEIS | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 0929 1338 | WEIS | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 1345 1758 | WEIS | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 1200 2400 | BOUL | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 1248 2400 | HARV | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
| 0935 2340 | SGMR | 0039 0040 | 0015 0100 | 0207 0210.5 | 1 | 0421 0603 | 1 | 0603 0730 | 1 | 0727.5 1 | 1740.8 1747.1 | 2 | 1740.8 1747.1 | 2 | IIIGG |
---
93
## SOLAR X-RAYS MEASURED BY SATELLITE
### SOLRAD 9 - EXPLORER 37
#### JULY 1972
| DAY | HOUR | (10^-3 ergs/cm^2/sec) |
|-----|------|-----------------------|
| | | |
| 1 | 0-24 | |
| 2 | 0-24 | |
| 3 | 0-24 | |
| 4 | 0-24 | |
| 5 | 0-24 | |
| 6 | 0-24 | |
| 7 | 0-24 | |
| 8 | 0-24 | |
| 9 | 0-24 | |
| 10 | 0-24 | |
| 11 | 0-24 | |
| 12 | 0-24 | |
| 13 | 0-24 | |
| 14 | 0-24 | |
| 15 | 0-24 | |
| 16 | 0-24 | |
| 17 | 0-24 | |
| 18 | 0-24 | |
| 19 | 0-24 | |
| 20 | 0-24 | |
| 21 | 0-24 | |
| 22 | 0-24 | |
| 23 | 0-24 | |
| 24 | 0-24 | |
NAVAL RESEARCH LABORATORY 1 - 8A HOURLY AVERAGES
94
| DAY | HOUR | AVERAGE (10^-3 ergs/cm^2/sec) |
|-----|------|-----------------------------|
| | | |
| 1 | 1 | 0.76 |
| | 2 | 3.44 |
| | 3 | 3.82 |
| | 4 | 4.72 |
| | 5 | 6.3 |
| | 6 | 8.4 |
| | 7 | 12.1 |
| | 8 | 17.2 |
| | 9 | 32.7 |
| | 10 | 32.6 |
| | 11 | 32.6 |
| | 12 | 32.6 |
| | 13 | 32.6 |
| | 14 | 32.6 |
| | 15 | 32.6 |
| | 16 | 32.6 |
| | 17 | 32.6 |
| | 18 | 32.6 |
| | 19 | 32.6 |
| | 20 | 32.6 |
| | 21 | 32.6 |
| | 22 | 32.6 |
| | 23 | 32.6 |
| | 24 | 32.6 |
NAVAL RESEARCH LABORATORY 1 - 8A HOURLY AVERAGES
SOLAR X-RAYS MEASURED BY SATELLITE
SOLRAD 10 - EXPLORER 44
AUGUST 1972
### SOLAR X-RAYS MEASURED BY SATELLITE
#### SOLRAD 9 - EXPLORER 37
#### JULY 1972
| DAY | HOUR | (10^-2 ergs/cm^2/sec) |
|-----|------|----------------------|
| | | |
| 1 | 0 | 0.08 |
| 2 | 1 | 0.12 |
| 3 | 2 | 0.16 |
| 4 | 3 | 0.20 |
| 5 | 4 | 0.24 |
| 6 | 5 | 0.28 |
| 7 | 6 | 0.32 |
| 8 | 7 | 0.36 |
| 9 | 8 | 0.40 |
| 10 | 9 | 0.44 |
| 11 | 10 | 0.48 |
| 12 | 11 | 0.52 |
| 13 | 12 | 0.56 |
| 14 | 13 | 0.60 |
| 15 | 14 | 0.64 |
| 16 | 15 | 0.68 |
| 17 | 16 | 0.72 |
| 18 | 17 | 0.76 |
| 19 | 18 | 0.80 |
| 20 | 19 | 0.84 |
| 21 | 20 | 0.88 |
| 22 | 21 | 0.92 |
| 23 | 22 | 0.96 |
| 24 | 23 | 1.00 |
| 25 | 24 | 1.04 |
| | | |
NAVAL RESEARCH LABORATORY 8 - 20A HOURLY AVERAGES
## SOLAR X-RAYS MEASURED BY SATELLITE
**SOLRAD 10 - EXPLORER 44**
**AUGUST 1972**
**NAVAL RESEARCH LABORATORY 8-20A HOURLY AVERAGES** (10⁻² ergs/cm²/sec)
| DAY | HOUR |
|-----|------|
| | |
| 1 | 2,96 4,52 4,20 2,96 3,32 4,01 5,85 9,32 5,80 10,6 5,92 4,69 4,73 4,44 4,40 3,94 3,41 4,77 5,88 5,81 5,28 4,38 5,47 5,95 |
| 2 | 7,15 7,64 7,13 13,1 42,6 42,0 40,8 25,9 17,7 14,4 12,9 10,6 8,84 7,35 7,34 5,89 5,92 5,84 8,78 7,40 23,4 42,9 42,0 23,6 |
| 3 | 31,6 11,8 8,79 8,17 7,85 5,92 5,86 5,89 4,44 4,44 4,41 4,44 4,40 3,77 3,35 5,68 2,96 2,96 2,96 2,96 3,21 3,54 5,28 4,74 |
| 4 | 2,89 2,96 2,96 2,96 2,96 5,11 33,7 42,9 29,4 22,2 13,8 3,90 8,89 9,37 12,2 5,92 7,33 5,00 4,41 4,34 4,31 2,96 2,96 3,56 |
| 5 | 2,96 3,15 3,35 2,96 2,96 2,96 2,96 2,96 3,74 3,45 2,78 3.02 2,93 2,96 2,96 2,96 2,96 2,91 2,91 3,52 1,82 1,78 2,37 3,54 |
| 6 | 2,06 2,88 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 2,96 3,02 2,96 3,52 1,82 1,78 2,37 3,54 |
| 7 | 2,96 1.85 4,81 4,79 8,23 3,30 2,93 2,89 2,96 2,96 3,41 6,90 4,97 6,50 8,88 4,29 40,5 29,9 17,6 14,8 10,9 9,21 7,76 5,92 |
| 8 | 5,92 5,92 4,57 4,87 4,44 4,38 4,05 2,96 3,08 2,96 2,96 2,96 2,96 3,35 2,96 3,26 3,10 3,12 2,90 2,89 8,49 5,33 2,96 |
| 9 | 3,47 2,96 2,96 2,96 2,09 2,91 3,17 2,96 4,09 3,06 2,96 3,25 2,96 2,96 2,96 2,96 3,22 2,95 3,23 3,48 2,80 1,77 2,39 3,13 |
| 10 | 2,38 1,90 4,92 5,92 4,76 4,52 5,68 2,96 2,96 2,96 4,13 4,05 3,13 3,59 3,60 3,24 2,96 3,14 2,96 2,96 2,96 2,96 2,85 4,14 |
| 11 | 9,75 7,77 4,82 3,45 8,45 4,56 3,52 2,96 2,00 1,77 1,74 1,61 9,38 24,7 9,74 6,39 5,06 4,04 3,07 2,96 2,96 2,96 2,96 3,07 |
| 12 | 2,93 2,90 2,93 2,85 2,86 2,84 1,75 5,11 3,03 2,96 2,48 1,70 1,65 2,07 8,01 5,92 2,49 1,65 1,67 1,68 4,10 6,42 3,08 2,96 |
| 13 | 2,96 3,36 5,20 2,76 2,91 2,96 2,68 3,04 2,96 2,96 2,96 2,96 2,96 2,92 2,96 2,90 1,63 1,96 1,56 1,77 1,72 1,54 1,32 |
| 14 | 1,31 1,20 1,12 1,12 1,12 1,12 1,10 1,22 1,02 1,00 1,12 1,19 1,05 1,28 1,48 1,51 1,12 1,44 1,43 1,71 1,70 1,79 1,76 1,86 2,84 |
| 15 | 2,91 2,77 1,79 1,74 1,50 1,34 1,13 0,96 0,97 1,11 0,86 0,86 0,89 0,84 0,87 0,81 1,07 5,71 2,27 1,37 0,90 0,85 0,80 0,83 |
| 16 | 0,81 0,76 0,95 0,89 0,77 0,72 0,71 0,72 0,71 0,78 0,72 0,73 0,81 0,72 0,95 0,92 0,84 0,80 0,75 0,77 0,75 0,74 0,74 0,86 |
| 17 | 0,82 0,85 0,91 0,85 0,85 0,96 1,00 0,86 0,85 0,84 0,85 0,85 0,90 0,96 1,00 0,93 0,85 0,89 0,90 0,89 0,94 1,03 0,94 0,97 |
| 18 | 0,96 0,94 1,06 1,09 1,02 0,99 1,07 1,01 1,07 1,11 1,17 1,01 1,22 1,29 1,06 1,08 1,09 1,91 1,82 1,48 1,29 1,19 1,19 1,54 |
| 19 | 1,91 1,58 1,48 1,57 1,51 1,44 1,38 1,55 2,63 1,43 1,54 3,27 2,00 5,85 10,1 5,70 3,07 2,03 1,75 3,60 2,15 2,19 1,63 |
| 20 | 2,32 3,12 2,96 2,55 1,69 2,02 1,92 2,86 2,94 2,91 2,76 2,62 2,18 2,33 2,03 1,67 2,20 1,60 4,36 1,96 1,90 1,71 1,69 1,63 |
| 21 | 1,64 1,83 1,64 1,71 2,05 1,71 2,35 2,92 2,96 1,77 1,67 2,13 1,79 2,43 1,76 1,70 1,65 1,84 1,77 1,71 1,62 1,58 1,62 1,83 |
| 22 | 1,83 1,79 2,38 2,05 1,66 1,60 1,51 1,51 1,52 1,51 1,50 1,45 1,77 1,66 0,68 4,10 2,96 2,27 3,19 2,86 2,90 2,29 1,92 1,74 |
| 23 | 1,68 2,68 3,00 1,93 1,63 1,90 1,52 1,49 1,67 3,18 2,92 2,10 1,79 1,44 1,43 1,48 1,51 1,54 1,46 6,05 4,81 3,24 2,57 1,90 |
| 24 | 1,81 2,93 1,68 2,91 3,95 1,61 1,61 1,69 1,67 1,68 2,13 1,82 1,96 1,67 1,68 2,85 2,05 2,65 1,81 2,44 1,66 3,22 2,85 1,84 |
| 25 | 1,67 1,75 1,66 1,61 2,06 4,44 2,63 2,18 1,97 1,75 5,90 5,09 6,26 1,71 1,57 1,82 1,60 1,67 1,89 1,78 1,96 2,70 2,67 2,93 |
| 26 | 2,92 2,91 3,03 4,48 3,03 2,96 2,88 3,78 3,82 2,96 3,55 3,38 3,43 2,94 2,91 4,28 3,70 3,55 5,24 2,92 2,86 7,86 7,86 7,17 |
| 27 | 4,05 3,01 3,04 2,96 2,91 3,16 2,96 2,96 3,04 3,00 3,97 3,49 2,88 2,96 2,83 2,96 2,96 2,92 3,45 2,99 3,04 3,72 2,96 3,29 |
| 28 | 3,3 5,82 4,41 3,76 2,96 3,18 3,41 3,13 3,33 3,27 4,07 5,49 3,35 2,93 3,39 3,41 6,25 2,92 3,09 3,75 3,70 2,96 2,93 2,91 |
| 29 | 2,96 3,29 3,99 2,96 4,05 4,34 4,44 4,71 7,68 5,68 4,40 5,63 5,16 6,15 5,43 4,35 4,20 4,44 4,30 3,31 3,23 4,82 5,33 5,87 |
| 30 | 4,67 4,38 3,89 3,74 4,41 5,87 6,56 7,16 5,88 5,89 5,88 5,88 5,32 6,76 4,90 4,40 5,65 5,68 4,82 6,81 3,40 3,40 2,96 2,96 |
| 31 | 3,34 2,96 2,88 2,96 4,30 2,96 2,94 2,94 2,96 2,96 3,06 2,91 2,96 3,02 3,21 2,93 2,96 4,44 3,03 2,96 2,96 4,75 3,60 3,63 |
This table provides hourly averages of solar x-rays measured by satellite SOLRAD 10 - Explorer 44 during August 1972. The data is presented in ergs/cm²/sec units for each day and hour of the month.
## SOLAR X-RAYS BY SATELLITE
**EXPLORER 37**
**JULY 1972**
### OUTSTANDING EVENTS
| DAY | START TIME | 0.5-3A FLUX XE-5 | PEAK TIME | I-8A FLUX XE-4 | PEAK TIME | 8-20A FLUX XE-3 | PEAK TIME | END TIME | COMMENTS |
|-----|------------|------------------|-----------|----------------|-----------|----------------|-----------|----------|----------|
| 3 | 0154 | 23.00 | 0156 | 64.00 | 0158 | 29.00 | 0200 | 0205 | |
| 3 | 1742 | 14.00 | 1750 | 59.00 | 1752 | 46.00 | 1756 | 1804 | |
| 4 | 0527 | 37.00 | 0527 | 81.00 | 0527 | 40.00 | 0530 | 0532 | |
| 4 | 1151 | 76.00 | 1157 | 180.00 | 1159 | 53.00 | 1204 | 1213 | |
| 4 | 1711 | 65.00 | 1718 | 180.00 | 1721 | 67.00 | 1727 | 1729D | |
| 4 | 1806 | 120.00 | 1815 | 440.00 | 1813 | 110.00 | 1816 | 1840 | |
| 5 | 0059 | 16.00 | 0059 | 41.00 | 0100 | 24.00 | 0104 | 0104 | |
| 6 | 0117 | 5.60 | 0121 | 42.00 | 0123 | 28.00 | 0126 | 0126 | |
| 6 | 0204 | 7.80 | 0208 | 51.00 | 0210 | 40.00 | 0210 | 0212D | |
| 6 | 0648 | 78.00 | 0657 | 220.00 | 0701 | 80.00 | 0704 | 0705D | |
| 6 | 1101 | 13.00 | 1104 | 60.00 | 1104 | 40.00 | 1107 | 1120 | |
| 6 | 1237E | 20.00 | 1241 | 70.00 | 1242 | 40.00 | 1245 | 1259 | |
| 7 | 1033 | 4.50 | 1038 | 38.00 | 1037 | 27.00 | 1035 | 1040 | |
| 7 | 1131E | 7.80D | 1131E | 62.00D | 1131E | 40.00 | 1134 | 1139 | |
| 7 | 1447E | 6.70 | 1450 | 45.00 | 1450 | 40.00 | 1453 | 1456 | |
| 7 | 1524 | 11.00 | 1524 | 41.00 | 1525 | 28.00 | 1526 | 1529 | |
| 8 | 0036E | 4.50D | 0039E | 40.00D | 0036E | 29.00 | 0037 | 0041 | |
| 8 | 0250 | 12.00 | 0252 | 43.00 | 0252 | 27.00 | 0253 | 0255 | |
| 8 | 0436 | 14.00 | 0438 | 46.00 | 0438 | 25.00 | 0439 | 0442 | |
| 10 | 0828 | 33.00 | 0834 | 130.00 | 0834 | 40.00 | 0844 | 0849 | |
| 11 | 1359 | 43.00 | 1415 | 180.00 | 1412 | 80.00 | 1432 | 1433D | |
| 13 | 1621 | 6.70D | 1621E | 48.00D | 1621E | 28.00 | 1624 | 1627 | |
| 14 | 1336E | 8.90D | 1336E | 44.00 | 1338 | 25.00 | 1340 | 1342 | |
| 14 | 2008E | 110.00 | 2013 | 310.00 | 2018 | 80.00 | 2023 | 2106 | |
| 15 | 0256 | 71.00 | 0256 | 130.00 | 0258 | 40.00 | 0259 | 0301 | |
| 21 | 2057 | 19.00 | 2109 | 64.00 | 2109 | 26.00 | 2111 | 2116 | |
| 22 | 1030 | 10.00 | 1031 | 35.00 | 1035 | 19.00D | 1036D | 1036 | |
| 23 | 1700 | 13.00 | 1700 | 39.00 | 1703 | 19.00 | 1708 | 1708 | |
| 28 | 1326E | 65.00 | 1327 | 180.00 | 1327 | 53.00 | 1327 | 1333 | |
| 31 | 1108E | 71.00D | 1137D | 92.00 | 1125 | 40.00 | 1135 | 1211 | |
## SOLAR X-RAYS BY SATELLITE SOLRAD 10 - EXPLORER 44
### AUGUST 1972
#### NAVAL RESEARCH LABORATORY
| DAY | START TIME | 0.5-3A FLUX XE-5 | PEAK TIME | I-8A FLUX XE-4 | PEAK TIME | 8-20A FLUX XE-3 | PEAK TIME | END TIME |
|-----|------------|-------------------|-----------|----------------|-----------|----------------|-----------|---------|
| 1 | 0123 | 20.40 | 0141 | 83.30 | 0146 | 59.20 | 0135 | 0158D |
| | | | | | | | | |
| 1 | 0608 | 8.76 | 0612 | 37.80 | 0609 | 59.20 | 0608 | 0637 |
| | | | | | | | | |
| 1 | 0720E | 67.80 | 0724 | 182.00 | 0725 | 118.00 | 0721 | 0807 |
| | | | | | | | | |
| 1 | 0855E | 169.00 | 0921 | 326.00 | 0921D | 178.00 | 0929 | 0954D |
| | | | | | | | | |
| 1 | 1033 | 5.84 | 1034 | 0.00 | 1033 | 59.20 | 1033 | 1049 |
| | | | | | | | | |
| 1 | 1532 | 7.30D | 1534E | 37.80 | 1532 | 44.40 | 1532 | 1538 |
| | | | | | | | | |
| 1 | 1659 | 8.76 | 1659 | 37.80 | 1700 | 44.40 | 1659 | 1704 |
| | | | | | | | | |
| 1 | 1826E | 1.72D | 1826E | 37.80 | 1826E | 59.20 | 1827 | 1831 |
| | | | | | | | | |
| 1 | 1841 | 5.84D | 1843 | 37.80 | 1841 | 59.20 | 1841 | 1855 |
| | | | | | | | | |
| 1 | 2312E | 5.84D | 2312E | 53.00D | 2312E | 74.00 | 2331 | 2342 |
| | | | | | | | | |
| 1 | 1659 | 8.76 | 1659 | 37.80 | 1700 | 44.40 | 1659 | 1704 |
| | | | | | | | | |
| 1 | 1826E | 1.72D | 1826E | 37.80 | 1826E | 59.20 | 1827 | 1831 |
| | | | | | | | | |
| 1 | 1841 | 5.84D | 1843 | 37.80 | 1841 | 59.20 | 1841 | 1855 |
| | | | | | | | | |
| 1 | 2312E | 5.84D | 2312E | 53.00D | 2312E | 74.00 | 2331 | 2342 |
| | | | | | | | | |
... (continued)
| DAY | UNIVERSAL TIME | WIDE SPREAD INDEX | NUMBER OF STATION REPORTS BY TYPE | KNOWN FLARE | McMATH REGION |
|-----|----------------|-------------------|----------------------------------|-------------|---------------|
| JULY | | | | | |
| 27 | 0635 0650 | 0638 | 1- | 1 | 0635 |
| | 0123 0143 | 0129 | 1- | 3 | 0121 |
| | 0615 0650 | 0620 | 1- | 1 | 0615 |
| | 1237 1258 | 1249 | 1- | 1 | 1239E |
| | 1323 1415 | 1330 | 1+ | 5 | 1321 |
| | 2142 2210 | 2149 | 1- | 1 | 2142 |
| | 1305 1410 | 1322 | 1 | 1 | 1300E |
| | 1844 2010 | 1848 | 1- | 5 | 1840 |
| | 0718E 0733 | 0730 | 1- | 1 | 0714 |
| | 1606 1625 | 1610 | 1- | 5 | 1604E |
| | 0428 0456 | 0432 | 1- | 1 | 0429 |
| | 1101 1119D | 1119 | 2+ | 5 | 1059 |
| | 1158 1230 | 1205 | 1+ | 3 | 1159 |
| AUGUST | | | | | |
| 01 | 0123 0306 | 0151 | 1- | 1 | 0123 |
| | 0659 0823 | 0708 | 1+ | 5 | 0658 |
| | 0722 0750 | 0730 | 1+ | 3 | 0720 |
| | 0827 1002 | 0858 | 1 | 1 | 0832E |
| | 0842 1028 | | 1 | 1 | 0841 |
| | 0920 1010 | 0930 | 2 | 3 | 0922E |
| | 1135 1145D | 1145 | 1 | 3 | 1133 |
| | 1151 1220 | 1156 | 1 | 3 | 1148 |
| | 1533 1600 | 1540 | 1- | 1 | 1530 |
| | 1658 1720 | 1706 | 1- | 1 | 1659E |
| | 2216 2354 | 2312 | 1- | 1 | * |
| | 0001 0003 | 0002 | 1- | 1 | 0007 |
| | 0010 0116 | 0042 | 1- | 1 | 0127E |
| | 0130 0242 | 0143 | 1- | 1 | 0316E |
| | 0312 0630 | 0338 | 3 | 5 | 0355E |
| | 0357 1100 | | 1- | 1 | 0619E |
| | 0620 0709 | 0623 | 1- | 1 | 0676 |
| | 0740E 0904 | 0817 | 1- | 1 | 0736 |
| | 1045 1140 | 1056 | 1+ | 5 | 1048E |
| | 1841 1926 | 1844 | 2 | 5 | 1838 |
| | 2000 0430 | 2105 | 2 | 5 | 2006E |
| | 2025 2230U | | 2+ | 5 | NF |
| | 1502 1530 | 1508 | 1+ | 5 | 1502E |
| | 0528 0907 | 0635 | 1+ | 3 | 0525 |
| | 0623 0945 | 0636 | 3 | 5 | 0621 |
| | 0640 0745 | | 1- | 1 | 0646E |
| | 0942 1057 | | 1- | 1 | 0943 |
| | 1318 1329 | 1319 | 1- | 3 | 1313 |
| | 1407 1507 | | 1- | 1 | 1405 |
| | 0923 0950 | 0931 | 1- | 1 | 0923 |
| | 1423 1508 | 1445 | 1- | 3 | 1426 |
| | 0420 0450 | 0424 | 1- | 1 | 0418 |
| | 0445 0522 | 0500 | 1 | 1 | 0446 |
| | 0252 0338 | 0258 | 2- | 5 | 0252E |
| | 0350 0500 | 0405 | 1+ | 5 | 0348E |
| | 0421 0434 | 0424 | 1- | 1 | 0419 |
| | 1057 1130 | 1112 | 1+ | 3 | 1054 |
| | 1202 1240 | 1207 | 1+ | 5 | 1200 |
| | 1315 1425 | 1359 | 1- | 1 | 1319E |
| | 1448 1933 | 1521 | 1- | 1 | 1449E |
| | 1455 1500D | 1500 | 1 | 1 | 1457E |
| | 1509 1710 | 1528 | 3+ | 5 | 1505 |
| | 2123 2208 | 2132 | 1+ | 5 | 2128 |
| | 0805 0825 | 0816 | 1 | 3 | 0809E |
| | 0933 0955 | 0937 | 1- | 1 | 0937 |
| | 1002 1038 | 1014 | 1 | 3 | NF |
| | 1615 1650 | 1623 | 1 | 5 | 1612 |
| | 2244 2336 | 2252 | 1- | 3 | 2243E |
| | 1405 1420 | 1412 | 1- | 1 | 1403 |
| | 2043 2132 | 2100 | 1- | 3 | 2049 |
| | 2311 0351 | 0017 | 1- | 1 | 2306 |
| | 2337 0345 | 0020 | 1- | 1 | 2337 |
| | 0401 0547 | 0417 | 1- | 3 | 0400 |
| | 0520E 0556 | 0543 | 1- | 1 | 0520 |
| | 1217 1233 | 1227 | 2- | 5 | 1217E |
| | 1233 1400 | 1243 | 2 | 5 | 1230E |
| | 1624 1730 | 1648 | 1 | 3 | NF |
| | 1821 1930 | 1844 | 1- | 3 | NF |
| | 0625 0640 | 0625 | 1 | 1 | 0619 |
| | 0706 0838 | 0747 | 1 | 3 | 0704 |
| | 0741 0750 | 0745 | 1- | 3 | NF |
| | 1433 1550 | 1444 | 2 | 5 | 1432 |
| | 0153 0242 | 0202 | 1- | 1 | 0154 |
| | 0641 0655 | 0647 | 1- | 1 | 0644 |
### Solar Proton Monitoring ATS-1 (1966 - 110A)
#### July - August 1972
**Energy Level 5-21 MeV-Hourly Averages (Particles cm$^{-2}$ sec$^{-1}$)**
| Time | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
|------|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
| 01 | | | | | | | | | | | | | | | | | | | | | | | | |
| 02 | | | | | | | | | | | | | | | | | | | | | | | | |
| 03 | | | | | | | | | | | | | | | | | | | | | | | | |
| 04 | | | | | | | | | | | | | | | | | | | | | | | | |
| 05 | | | | | | | | | | | | | | | | | | | | | | | | |
| 06 | | | | | | | | | | | | | | | | | | | | | | | | |
| 07 | | | | | | | | | | | | | | | | | | | | | | | | |
| 08 | | | | | | | | | | | | | | | | | | | | | | | | |
| 09 | | | | | | | | | | | | | | | | | | | | | | | | |
| 10 | | | | | | | | | | | | | | | | | | | | | | | | |
| 11 | | | | | | | | | | | | | | | | | | | | | | | | |
| 12 | | | | | | | | | | | | | | | | | | | | | | | | |
| 13 | | | | | | | | | | | | | | | | | | | | | | | | |
| 14 | | | | | | | | | | | | | | | | | | | | | | | | |
| 15 | | | | | | | | | | | | | | | | | | | | | | | | |
| 16 | | | | | | | | | | | | | | | | | | | | | | | | |
| 17 | | | | | | | | | | | | | | | | | | | | | | | | |
| 18 | | | | | | | | | | | | | | | | | | | | | | | | |
| 19 | | | | | | | | | | | | | | | | | | | | | | | | |
| 20 | | | | | | | | | | | | | | | | | | | | | | | | |
| 21 | | | | | | | | | | | | | | | | | | | | | | | | |
| 22 | | | | | | | | | | | | | | | | | | | | | | | | |
| 23 | | | | | | | | | | | | | | | | | | | | | | | | |
| 24 | | | | | | | | | | | | | | | | | | | | | | | | |
Note: Data from ATS-1 are believed to be subject to large error for two reasons: 1) sensor degradation and 2) an overflow of registers used to display the fluxes in the Boulder Warning center.
When counting rates exceed 10 particle/cm$^2$/sec they are highlighted by boxing.
When counting rates exceed 10 particle/cm²/sec they are highlighted by boxing.
Note: Data from ATS-1 are believed to be subject to large error for two reasons: 1) sensor degradation and 2) an overflow of registers used to display the fluxes in the Boulder Warning center.
Hourly Values of Ionospheric Data from Eight Locations
for the Period July 26 through August 14, 1972
by
S. M. Ostrow
National Oceanic and Atmospheric Administration
Boulder, Colorado
In Figure 1, hourly values of foF2 and fmin from eight ionosphere stations are presented for the period July 26 through August 14, 1972. The data are plotted against Universal Time, and the time of local midnight at each station is indicated by a carat. The graphs are similar to f-plots. Vertical lines drawn from the bottom of each graph indicate values of fmin, and dots connected by a continuous line represent values of foF2. Reasons for missing data and pertinent information about some of the measurements are indicated by standard symbols (see Piggott and Rawer, 1961, "URSI Handbook of Ionogram Interpretation and Reduction", for explanation of the symbols and format of the graphs). Monthly median values are also given for purposes of comparison with the daily/hourly data.
The geographic and geomagnetic coordinates of the eight ionosphere stations are listed in Table 1, together with the computed dip and computed ground L values. With the exception of Maui, the stations are all in Greenland or North America. The stations were selected to illustrate the changes in ionospheric behavior from high to low geomagnetic latitudes. These are a representative sample of the ionospheric data available at World Data Center-A for Solar-Terrestrial Physics at Boulder, Colorado. Formats in which the data are held include ionogram film, tabulations of daily, hourly and median values of characteristics, and f-plots. Depending on the originating laboratory, ionospheric data for a given location and month may arrive at the Data Center in less than a month or take more than a year, but most of the data have been received by about six months after the month of observation.
These graphs indicate that a complex pattern of global ionospheric behavior is associated with the solar-geophysical events that occurred during this time period. The most obvious feature of these graphs is the lengthy periods of high absorption produced by particle precipitation at high latitudes, the effects of which decrease with decreasing geomagnetic latitude, becoming negligible at low latitudes. Effects shown by the foF2 data, while less striking, indicate that important F2 layer changes are associated with the events in this period. The changes in diurnal patterns of foF2 at Mexico City and Maui suggest that F2-layer effects at lower latitudes during disturbed periods may deserve more study than they have received in previous years.
Table 1
| Station | Geographic Lat. | Long. | Geomagnetic Lat. | Long. | Computed Dip | L |
|-------------|-----------------|-------|------------------|-------|--------------|-----|
| Thule | 77.50°N | 69.20°W | 89.00°N | 357.52°E | 85.6° | 264.41 |
| Godhavn | 69.30°N | 53.50°W | 79.92°N | 32.67°E | 81.6° | 20.62 |
| Narssarssuaq| 61.20°N | 45.40°W | 71.21°N | 36.79°E | 77.5° | 7.38 |
| Churchill | 58.80°N | 94.20°W | 68.69°N | 322.63°E | 83.4° | 8.59 |
| St. John's | 47.60°N | 52.70°W | 58.50°N | 21.24°E | 72.0° | 3.43 |
| Wallops Is. | 37.90°N | 75.50°W | 49.31°N | 352.12°E | 69.9° | 2.54 |
| Mexico City | 19.40°N | 99.70°W | 29.16°N | 326.54°E | 46.3° | 1.27 |
| Maui | 20.80°N | 156.50°W | 20.86°N | 268.11°E | 38.8° | 1.13 |
| July 1972 | CHURCHILL DAILY AVERAGE COUNTS PER HOUR | DEEP RIVER DAILY AVERAGE COUNTS PER HOUR | CALGARY DAILY AVERAGE COUNTS PER HOUR | SULPHUR MT. DAILY AVERAGE COUNTS PER HOUR | CLIMAX DAILY AVERAGE COUNTS PER HOUR | DALLAS DAILY AVERAGE COUNTS PER HOUR |
|----------|----------------------------------------|----------------------------------------|----------------------------------------|----------------------------------------|----------------------------------------|----------------------------------------|
| 1 | 6911.9 | 11674.2 | 8755.0 | 6250.8 | | |
| 2 | 6927.5 | 11730.4 | 8785.1 | 6269.3 | | |
| 3 | 6956.5 | 11781.2 (21) | 8824.9 | 6274.3 | | |
| 4 | 6959.4 | 11748.6 | 8801.7 | 6265.3 | | |
| 5 | 6967.0 | 11754.8 | 8826.1 | 6276.6 (11) | | |
| 6 | 6981.5 | 11749.0 | 8839.8 | 6293.2 | | |
| 7 | 6973.0 | 11688.0 | 8836.0 | 6309.4 | | |
| 8 | 6995.7 | 11721.8 | 8872.1 | 6318.7 | | |
| 9 | 7013.5 | 11809.6 | 8912.7 | 6315.5 | | |
| 10 | 7021.5 | 11883.4 | 8926.9 | 6343.7 | | |
| 11 | 7048.4 | 11945.6 | 8987.0 | 6369.5 | | |
| 12 | 7029.9 | 11918.8 | 8956.6 | 6359.8 | | |
| 13 | 7025.7 | 11892.2 | 8947.6 | 6349.7 | | |
| 14 | 7062.1 | 11958.5 | 9001.6 | 6368.1 | | |
| 15 | 7065.5 | 11985.2 | 9012.3 | 6388.9 | | |
| 16 | 7096.5 | 12034.4 | 9075.6 | 6414.7 | | |
| 17 | 7103.2 | 12043.9 | 9080.0 | 6407.9 | | |
| 18 | 7073.8 | 11966.1 | 9062.1 | 6389.8 | | |
| 19 | 7026.6 | 11919.8 | 9005.9 | 6349.6 | | |
| 20 | 6984.5 | 11871.5 | 8938.6 | 6323.3 | | |
| 21 | 6963.0 | 11829.7 | 8908.6 | 6304.7 | | |
| 22 | 6941.1 | 11726.8 | 8866.4 | 6278.8 | | |
| 23 | 6915.6 | 11668.7 | 8823.7 | 6270.7 | | |
| 24 | 6931.5 | 11724.2 | 8840.8 | 6289.5 | | |
| 25 | 6907.0 | 11581.4 | 8774.6 | 6278.4 | | |
| 26 | 6892.1 | 11580.0 | 8745.5 | 6250.5 | | |
| 27 | 6909.7 | 11642.8 | 8781.0 | 6257.9 | | |
| 28 | 6915.7 | 11647.4 | 8776.8 | 6268.6 | | |
| 29 | 6872.7 | 11586.7 | 8690.0 | 6224.3 | | |
| 30 | 6835.5 | 11521.8 | 8659.2 | 6205.3 | | |
| 31 | 6857.3 | 11551.1 | 8671.0 | 6212.8 | | |
( ) Number of hours for which data are available if less than 24 (or number of section hours if less than 40 for Climax).
Churchill and Dallas Super Neutron Monitors, Scaling Factors 120.
Deep River Super Neutron Monitor, Scaling Factor 300.
Calgary and Sulphur Mountain Super Neutron Monitors, Scaling Factors 100.
Climax IGC Station B305, Scaling Factor 100.
| Aug. 1972 | CHURCHILL DAILY AVERAGE COUNTS PER HOUR | DEEP RIVER DAILY AVERAGE COUNTS PER HOUR | CALGARY DAILY AVERAGE COUNTS PER HOUR | SULPHUR MT. DAILY AVERAGE COUNTS PER HOUR | CLIMAX DAILY AVERAGE COUNTS PER HOUR | DALLAS DAILY AVERAGE COUNTS PER HOUR |
|----------|----------------------------------------|-----------------------------------------|--------------------------------------|----------------------------------------|-------------------------------------|-------------------------------------|
| 1 | | | 11577.5 | 8694.2 | | 6246.9 |
| 2 | | | 11594.8 | 8712.7 | | 6243.4 |
| 3 | | | 11625.2 | 8737.2 | | 6232.0 |
| 4 | | | 11097.4 | 8384.9 | | 5922.3 |
| 5 | | | 9654.2 | 7126.6 | | 5427.9 |
| 6 | | | 10238.2 | 7597.6 | | 5712.5 |
| 7 | | | 10731.8 | 8019.6 | | 5873.1 |
| 8 | | | 10831.3 | 8103.1 | | 5953.8 |
| 9 | | | 10605.7 | 7960.7 | | 5945.3 |
| 10 | | | 10798.6 | 8125.7 | | 5985.6 |
| 11 | | | 10958.8 | 8228.5 | | 6022.5 |
| 12 | | | 11114.9 | 8341.1 | | 6063.4 |
| 13 | | | 11172.0 | 8445.7 | | 6119.3 |
| 14 | | | 11277.8 | 8495.8 | | 6136.3 |
| 15 | | | 11321.2 | 8516.5 | | 6160.5 |
| 16 | | | 11368.9 | 8527.2 | | 6161.1 |
| 17 | | | 11419.3 | 8584.9 | | 6163.1 |
| 18 | | | 11410.4 | 8592.9 | | 6187.2 |
| 19 | | | 11345.6 | 8519.9 | | 6152.0 |
| 20 | | | 11284.4 | 8529.8 | | 6142.7 |
| 21 | | | 11253.4 | 8489.2 | | 6129.5 |
| 22 | | | 11304.6 | 8497.1 | | 6136.8 |
| 23 | | | 11368.5 | 8539.9 | | 6157.7 |
| 24 | | | 11421.8 | 8577.0 | | 6186.3 |
| 25 | | | 11492.2 | 8630.5 | | 6207.7 |
| 26 | | | 11516.8 | 8645.9 | | 6215.5 |
| 27 | | | 11395.7 | 8547.2 | | 6194.5 |
| 28 | | | 11371.6 | 8547.2 | | 6190.3 |
| 29 | | | 11407.2 | 8587.7 | | 6205.7 |
| 30 | | | 11450.4 | 8628.2 | | 6219.0 |
| 31 | | | 11561.4 | 8665.0 | | 6230.2 |
( ) Number of hours for which data are available if less than 24 (or number of section hours if less than 40 for Climax).
Churchill and Dallas Super Neutron Monitors, Scaling Factors 120.
Deep River Super Neutron Monitor, Scaling Factor 300.
Calgary and Sulphur Mountain Super Neutron Monitors, Scaling Factors 100.
Climax IGC Station B305, Scaling Factor 100.
## GEOMAGNETIC ACTIVITY INDICES
### JULY-AUGUST 1972
| DAY | THREE-HOUR RANGE INDICES | SUM | Ci | Cp | Ap |
|-----|--------------------------|-----|----|----|----|
| | Kp | | | | |
| 26 | D | 3 | 2 | 4+ | 3+ | 3 | 4 | 2+ | 3 | 25 | 1.1 | 0.9 | 17 |
| 27 | | 2- | 4- | 3+ | 2 | 1+ | 2 | 1- | 1 | 16-| 0.4 | 0.5 | 9 |
| 28 | Q | 2- | 2- | 1+ | 2 | 1 | 1 | 1- | 1 | 10+| 0.2 | 0.2 | 5 |
| 29 | QQ | 0+ | 1 | 1- | 1 | 0+ | 1+ | 1+ | 1 | 7 | 0.1 | 0.1 | 4 |
| 30 | Q | 0 | 0+ | 0+ | 1- | 1+ | 2 | 2- | 2- | 8 | 0.2 | 0.1 | 4 |
| 31 | | 1 | 1 | 1 | 0+ | 0+ | 0+ | 3 | 3- | 10-| 0.2 | 0.3 | 6 |
| 1 | | 3+ | 4 | 2 | 2- | 2- | 1+ | 1+ | 2- | 70 | 0.6 | 0.6 | 10 |
| 2 | Q | 2+ | 2- | 2- | 1 | 1- | 1 | 1 | 1 | 10+| 0.2 | 0.2 | 5 |
| 3 | QQ | 0+ | 1 | 1 | 2- | 2- | 2 | 1+ | 1- | 10-| 0.2 | 0.2 | 5 |
| 4 | D | 6- | 8+ | 7 | 4 | 5+ | 4 | 7- | 9 | 50 | 2.0 | 1.9 | 132|
| 5 | D | 8+ | 8+ | 7 | 7+ | 8- | 9- | 7+ | 6- | 60+| 2.0 | 2.1 | 182|
| 6 | D | 7+ | 7 | 7 | 5+ | 5- | 5+ | 7- | 3+ | 47-| 1.8 | 1.8 | 87 |
| 7 | | 5- | 4+ | 3+ | 3 | 3- | 4- | 2+ | 2 | 26 | 1.1 | 1.0 | 19 |
| 8 | | 1+ | 1- | 0+ | 1- | 3- | 2+ | 2+ | 4+ | 15-| 0.6 | 0.5 | 9 |
| 9 | D | 5- | 7- | 7- | 8+ | 4 | 4+ | 3+ | 3+ | 41+| 1.8 | 1.8 | 74 |
| 10 | | 2+ | 2- | 3- | 3+ | 4+ | 4 | 3 | 4 | 25+| 1.1 | 1.0 | 18 |
| 11 | | 3+ | 3+ | 2+ | 2+ | 3+ | 3+ | 4- | 4 | 26-| 1.0 | 0.9 | 17 |
| 12 | | 2+ | 2+ | 1 | 1+ | 1+ | 2+ | 2+ | 2 | 14+| 0.3 | 0.3 | 7 |
| 13 | QQ | 1 | 2- | 1+ | 1- | 0+ | 2+ | 1+ | 1+ | 10 | 0.1 | 0.2 | 5 |
| 14 | | 2+ | 2- | 1 | 2 | 3+ | 2+ | 2+ | 2 | 17 | 0.4 | 0.5 | 9 |
## GEOMAGNETIC ACTIVITY INDICES
### DAYS IN SOLAR ROTATION INTERVAL
#### PLANETARY MAGNETIC THREE-HOUR-RANGE INDICES
- **Kp** (after Bartels)
- **Kp** till 1972 Aug. 31
- **Ks** (from Wingst and Göttingen) till Sept. 20
### DAILY AVERAGE INDICES Ap
| DAY | SEP | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG |
|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|
| 1 | 10 | 21 | 6 | 6 | 7 | 7 | 8 | 17 | 18 | 6 | 5 | 10 |
| 2 | 2 | 21 | 3 | 5 | 8 | 13 | 11 | 18 | 6 | 7 | 5 | 5 |
| 3 | 5 | 20 | 3 | 12 | 6 | 9 | 16 | 4 | 7 | 12 | 7 | 5 |
| 4 | 9 | 13 | 6 | 8 | 10 | 9 | 8 | 17 | 5 | 13 | 4 | 132 |
| 5 | 14 | 16 | 5 | 5 | 6 | 6 | 5 | 17 | 6 | 11 | 3 | 182 |
| 6 | 12 | 20 | 3 | 3 | 2 | 6 | 26 | 8 | 9 | 7 | 4 | 87 |
| 7 | 20 | 16 | 7 | 1 | 4 | 8 | 45 | 8 | 3 | 8 | 10 | 19 |
| 8 | 12 | 23 | 8 | 3 | 4 | 7 | 12 | 6 | 4 | 6 | 10 | 9 |
| 9 | 7 | 37 | 4 | 7 | 5 | 4 | 10 | 3 | 14 | 4 | 6 | 74 |
| 10 | 6 | 8 | 5 | 3 | 7 | 10 | 3 | 5 | 9 | 4 | 7 | 18 |
| 11 | 6 | 10 | 16 | 6 | 15 | 7 | 7 | 6 | 7 | 4 | 6 | 17 |
| 12 | 8 | 9 | 9 | 9 | 6 | 4 | 3 | 10 | 9 | 3 | 7 | 7 |
| 13 | 17 | 14 | 3 | 13 | 4 | 22 | 7 | 12 | 8 | 4 | 3 | 5 |
| 14 | 9 | 9 | 1 | 3 | 3 | 15 | 4 | 7 | 7 | 10 | 3 | 9 |
| 15 | 9 | 8 | 2 | 3 | 19 | 13 | 5 | 6 | 38 | 11 | 6 | 10 |
| 16 | 11 | 4 | 2 | 8 | 29 | 8 | 20 | 6 | 18 | 8 | 8 | 6 |
| 17 | 13 | 3 | 1 | 67 | 20 | 22 | 16 | 6 | 9 | 62 | 8 | 6 |
| 18 | 47 | 2 | 7 | 22 | 19 | 12 | 11 | 24 | 10 | 126 | 5 | 13 |
| 19 | 9 | 2 | 7 | 11 | 11 | 14 | 5 | 10 | 4 | 19 | 8 | 14 |
| 20 | 16 | 4 | 6 | 3 | 8 | 12 | 5 | 8 | 4 | 9 | 5 | 15 |
| 21 | 5 | 5 | 11 | 10 | 22 | 9 | 5 | 19 | 4 | 5 | 3 | 15 |
| 22 | 4 | 9 | 31 | 19 | 25 | 4 | 10 | 10 | 5 | 12 | 10 | 8 |
| 23 | 2 | 6 | 45 | 12 | 32 | 6 | 8 | 8 | 7 | 11 | 10 | 3 |
| 24 | 6 | 13 | 36 | 7 | 10 | 33 | 20 | 5 | 5 | 14 | 17 | 2 |
| 25 | 27 | 6 | 43 | 6 | 17 | 16 | 8 | 3 | 5 | 6 | 33 | 5 |
| 26 | 21 | 2 | 19 | 12 | 22 | 6 | 10 | 3 | 8 | 10 | 17 | 19 |
| 27 | 38 | 4 | 8 | 4 | 15 | 4 | 19 | 7 | 8 | 17 | 9 | 25 |
| 28 | 10 | 17 | 10 | 4 | 23 | 6 | 11 | 22 | 22 | 13 | 5 | 8 |
| 29 | 6 | 27 | 5 | 15 | 14 | 2 | 22 | 42 | 10 | 11 | 4 | 8 |
| 30 | 23 | 14 | 5 | 16 | 9 | 27 | 17 | 14 | 3 | 4 | 6 |
| 31 | | | | | 7 | | | | | | | |
| MEAN| 13 | 12 | 11 | 10 | 13 | 10 | 12 | 11 | 10 | 14 | 8 | 24 |
119
### PRINCIPAL MAGNETIC STORMS
**AUGUST 1972**
| DATE | STORM TIME | OBS | GEO-MAG LAT. | SUDDEN COMMENCEMENT | AMPLITUDES | C FIGURE DEGREE OF ACTIVITY | MAXIMAL ACTIVITY ON K-SCALE 0 TO 9 | RANGES | STORM NUMBERS |
|------|------------|-----|--------------|----------------------|------------|-------------------------------|------------------------------------|--------|---------------|
| 08 04 | 0119 08 07 16 | COLL | 64.6N | SC * 7 48 -- S | 08 04 8 9 840 5460 3170 26 |
| | 0121 08 07 11 | SITK | 60.0N | SC * - + + S | 08 04 2,8 9 340 2310 1590 26 |
| | 0118 -- -- -- | NEWP | 55.1N | SC * 3 58 6 -- -- -- -- -- 26 |
| | 0119 08 08 03 | FRED | 49.6N | SC * + 4 +50 - 9 S | 08 04 8 9 95 550 220 26 |
| | 0119 08 08 03 | BOUL | 49.0N | SC * - 1 +46 - 4 S | 08 04 8 9 66 460 70 26 |
| | 0119 08 07 17 | TUCS | 40.4N | SC * - 1 +30 + 3 S | 08 04 8 9 66 460 70 26 |
| | 0120 08 04 20 | SJUA | 29.9N | SC * - 0.3 +19 + 5 MS | 08 04 2 7 14 204 46 26 |
| | 0119 08 04 20 | HONO | 21.1N | SC * + 1 +16 + 6 MS | 08 04 2 7 8 256 44 26 |
| | 0120 08 04 18 | HYDE | 7.6N | SC - 0.2 +12 - 2 MS | 08 04 2 7 5 149 42 26 |
| | 0119 08 07 16 | GUAM | 4.0N | SC * -- +32 -10 S | 08 04 8 9 20 330 100 26 |
| | 0119 08 07 12 | APIA | 16.1S | SC + 0 +20 - 7 S | 08 04 8 8 16 323 149 26 |
| | 0119 08 04 20 | PMOR | 18.6S | SC + 0.1 +25 +27 MS | 08 04 2,3,7 6 8 210 140 26 |
| | 0120 08 04 15 | GNAN | 43.2S | SC + 2 + 8 +10 S | 08 04 2 8 30 240 140 26 |
| | 0119 08 04 18 | TOOL | 46.7S | SC * - 3 +23 + 8 MS | 08 04 2,3 6 29 250 120 26 |
| | 0119 08 04 -- | KGLN | 57.3S | SC -- -- -- -- -- -- -- -- -- 26 |
Reports were received from the following observatories:
- College
- Sitka
- Newport
- Fredericksburg
- Boulder
- Tucson
- San Juan
- Honolulu
- Hyderabad
- Guam
- Apia
- Port Moresby
- Hermanus
- Gnangara
- Toolangi
- Port-aux-Francais
SUDDEN COMMENCEMENTS AND SOLAR FLARE EFFECTS
AUGUST 1972
PRELIMINARY REPORT ON RAPID MAGNETIC VARIATIONS (by Dr. A. Romana)
The meaning of the station symbols is given in the IAGA-Bulletins nr. 12 and 32. Times of ssc, si and bay-commencements are mean values. If given by ten or more stations they are underlined.
Sudden commencements followed by a magnetic storm or a period of storminess (ssc)
04 0119 A: SO DO NU SI MA VI FU LG IK TL FR PE SF KS QU TE HU TN LM; B: WN WI NI VL AQ EB CI KA PM PP GN AM (si: A: OT; C: SS)
04 0220 A: SO DO WN WI VL OT LG AQ EB CI TL FR PE QU TE TN PM LM AM; B: KA SS (si: A: SI NI MA FU; B: PP)
04 2054 A: NU SI WN WI VL MA VI LG AQ IK EB CI PE SF KA KS SS QU TE PM GN AM; B: NI TL (si: A: FU OT HU)
08 1341 A: MA LG SF LM; B: SO WI IK AQ EB QU; C: WN KA PP? (si: B: DO VL FU; C: SS - sfe: NI TL)
08 2354 A: NU SI MA OT LG AQ IK EB FR PE SF KS QU TE HU LM; B: NI WN WI VL VI CI TL PM PP GN AM; C: KA (si: A: FU; C: SS - bps: A: SO)
09 0037 A: WN AQ EB CI FR PE SS TL? TE PM HU AM; B: DO WI VL KA (si: A: SI MA FU OT SF AM; B: VI PP - bs: A: SO)
25 2258 A: NU MA VI LG FR SF KS QU HU; B: SO WN WI VL OT AQ IK EB TL PE PM TN AM. C: SI NI KA (si: A: FU TE; B: DO LM; C: SS - sfe: GN)
Sudden impulses found in the magnetograms (si)
27 0502 A: FU TE; B: WN AQ IK EB PE TE HU PP; C: NI SS (ssc: A: SO LM; B: WI VL MA TL GN PM; C: KA)
Rapid variations in form of bays (b, bs, bp, bps)
11 2048 b: B: WN VL - bs: A: SO PE KS - bp: A: IK TL SF; B: MA EB LM; C: NI - bps: A: LG
Giant pulsations (pg)
04 0800 - .... AM 10 1430 - 1545 FU
05 0500 - 1600 FU 14 0425 - 0545 NU (88s 8 )
09 0600 - 1100 FU
Solar-flare effects (sfe)
Effects confirmed by ionospheric or solar observations are underlined.
01 1657 - 1710 HU 07 0252 - 0256 PM 18 2110 - .... TE
01 1910 - 1930 HU (bp: B: PE) 07 1513 - 1615 WN? WI IK EB? 23 1911 - 1926 FR TE HU
02 1838 - 1852 FR HU FR NU 29 1342 - 1357 SO
11 1230 - 1305 WN
| Date/Time (UT) | Observer | Observation |
|---------------|----------|-------------|
| 04/0400 | Hanover, Illinois | Broad banded, brick red structure observed in the west that slowly moved eastward. The display continued for approximately two hours. |
| 0400 | Savory, Wyoming | From dusk to late evening there was a white glow between headings 340° and 30°, extending to 20° above the horizon. Between 0400 and 0430 UT a red glow was in evidence above the white up to 40° in altitude. |
| 0400 | Westcliff, Colorado | A red auroral patch was visible at the zenith for approximately 15 minutes. Before and after the zenith sighting a well developed red arc was evident to the north 15 to 20° above the horizon. Estimated intensity 10 to 12 kilorayleighs (kR). 1 kR = an apparent emission rate of $10^9$ photons/cm²(column)/sec. |
| 0500 | Fritz Peak, (Nederland, Colorado) | Aurora observed until obscured by clouds at about 0700 UT. Cloudiness prevented observations on the 5th but aurora was again observed on the night of the 6th. |
| 0530 | Hillsboro, Oregon | A strong white, steady glow was visible to the NNE. |
| 0600 | Hillsboro, Oregon | Narrow bands appeared intermittently above the steady glow, disappearing after 15 to 60 seconds. |
| 0800 | Hillsboro, Oregon | Large white clouds formed almost overhead, lasting 15 to 30 seconds. This marked the apparent peak of this display. |
| 0900 | Hillsboro, Oregon | Steady glow visible but dimming. |
| 1000 | Hillsboro, Oregon | Display had terminated. |
| 2100 | Springfield, Vermont | Aurora was evident as dark fell and continued all night with homogeneous bands constantly present and rays up to 80° above the horizon. No intense colors and no deep reds were seen, but between 0300 and 0430 UT a full corona developed five times, each of which lasted only a few minutes. The unique feature of the display was its extreme mobility. Rays formed in a few seconds only to vanish equally fast; surfaces flickered within time intervals of less than a second, while intensity changes were often of the order of 10 magnitudes.... |
| 2310-2335 | Ondrejov, Czechoslovakia | Diffuse display observed, dark red in color over the NNE horizon up to an altitude of 50°. At 2335 UT aurora weak, orange in color; maximum vertical extent: 25 to 30° above the NNE horizon. |
| | | In addition reports were received from Thunder Bay, Canada; from Michigan, Ohio and Topeka, Kansas, and the Royal Greenwich Observatory, Herstmonceux Castle. |
| 05/0200-0500 | Erie, Pennsylvania | Colorless display with at least two vertical plumes that fluctuated in brightness. Ended quite suddenly. |
| 0355 | Dubuque, Iowa | A white, rainbow-shaped arc was observed. |
| 0510 | Ann Arbor, Michigan (4-channel photometer) | Meridian scans of low latitude red arc aurora. Time is that of maximum intensity (300 rayleighs). Zenith angle was 52°S; breadth of arc between 36 and 58°S. 1 rayleigh = an apparent emission rate of $10^6$ photons/cm²(column)/sec. |
| 06/2130 | Springfield, Vermont | Aurora formed homogeneous bands half an hour after dark and display was limited to rays rising usually no more than 40° along with a number of bright diffuse surfaces. Aurora still present at 4:00 am (0800 UT). |