The K7RA Solar Update

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IB4TL
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The K7RA Solar Update

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Tad Cook, K7RA, Seattle, reports: On April 12, new sunspot group AR2814 appeared following 5 days of no sunspots. Daily sunspot numbers on the next 4 days were 16, 16, 17, and 22, taking the average daily sunspot number for the April 8-14 reporting week from 6.4 last week to 7. The April 15 sunspot number of 22 was not included in this average. So far in 2021, 39% of the days had no sunspots.Ge...

Source: http://www.arrl.org/news/view/the-k7ra-solar-update-676
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