The K7RA Solar Update

Published February 5, 2010, 5:10 pm, ARRL Amateur Radio News

As soon as sunspot 1041 went over the horizon at the end of January, sunspot 1043 emerged, high in our Sun's northern hemisphere. The average daily sunspot number this week fell more than 13 points to 14.6, and average daily solar flux declined nearly 7 points to 75. The geomagnetic activity was up, and the average daily planetary A index rose 2 points to 5.1. Sunspot numbers for January 28 ...

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