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Description:"Several years ago an effort was made to remove certain apparently serious inhomogeneities from world-wide solar flare data [dodson and Hedeman, 1968; Michard et al., 1970]. The principal fault was a systemic relationship between the number of reported flares of importance > 1 and time in the Universal Day. Specifically, for the years 1964-66, a very high maximum existed in the number of flares evaluated as of importance > 1 between approximately 0700 and 1000 UT. See Figure 1A. it has been known for a number of years that an inhomogeneity of this type existed in world-wide flare lists {Dodson and Hedeman, 1960]. Over the years, genuine efforts have been made to reduce these faults at the observing level but the efforts apparently were not successful. Therefore, for the years of IQSY (1964-65) and for 1966 an actual reevaluation of Quarterly Bulletin data was undertaken"--Introduction.
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Content Notes:by Helen W. Dodson and E. Ruth Hedeman and Marta Rovira de Miceli ; prepared by World Data Center A for Solar-Terrestrial Physics, NOAA.
"June 1972."
At head of title: World Data Center A for Solar-Terrestrial Physics.
Title from title screen (viewed September 23, 2015).
Includes bibliographical references (page 15).
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Rights Information:Public Domain
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