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The K7RA Solar Update

A

ARRL

Well-Known Member
Nov 15, 2008
10,994
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Following a good two-week run, sunspots disappeared after April 20. The average daily sunspot numbers for the recent reporting week were 8.1, down from 14 reported in last week’s bulletin, and average daily solar flux was 70.6, down from 76.4. Daily planetary and mid-latitude A index were nearly the same this week, with the average planetary A index at 4.7 and middle latitude A index at 4.6.

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