The K7RA Solar Update

scosta | February 23, 2018 | Costa Rica News

Average daily sunspot number dropped from 24 during the previous seven days, to 5.6 in the current reporting week, February 15-21. That average is so low because no sunspots have been seen since February 17, and no new sunspot regions were observed since February 4. Average daily solar flux dropped to 70.1 in the current period from 77.4 in the previous week.

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