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  • 06/12/2009 | The K7RA Solar Update

    Sunspot numbers from May 31-June 5 ranged from 13 to 23, then the Sun was blank for two days, followed by sunspot numbers of 12 for both June 8 and 9. This fleeting sunspot was number 1020, and like last week's spot, 1020 had the magnetic signature of a n
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  • 05/01/2009 | The K7RA Solar Update

    The data at the end of last week's bulletin showed daily sunspot numbers from April 16-22 as six zeros, then 11. In fact, every day was at zero until April 21, when it was 11; it moved again to zero the next day, April 22. We had just as many zero sunspot
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