The K7RA Solar Update
The K7RA Solar Update 04/09/2021 Tad Cook, K7RA, Seattle, reports: Sunspots were only visible on 4 days of the current reporting week — on April 3-6 — and now on Friday morning, still no sunspots. As a result, average daily sunspot number declined from 11.9 last week to 6.4 currently. Average daily solar flux also dropped from 77.4 to 73.4. On Thursday the daily solar flux was 74, just above the average for the previous 7 days, 73.4. The sun remained blank. Average daily planetary A index declined from 8.9 to 6.6, and average mid-latitude A index slipped from 7.7 to 5.6. Predicted so...