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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,435
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Average daily sunspot numbers rose this reporting week (June 15-21) from 4.9 to 29.4. The previous week had four days with no sunspots, and this week there were no zero sunspot days, hence the dramatic increase in the average.

Average daily solar flux barely budged from 74.4 to 74.6

Average daily planetary A index went from 7.3 to 9.4, and mid-latitude A index from 6.9 to 8.1.

Predicted solar flux...

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