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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
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Over the past week we saw solar activity decline somewhat. Average daily sunspot number declined from 55.7 (during the January 7-13 period) to 46 during the recent period, January 14-20.

Over the same periods average daily solar flux declined from 106.5 to 100.7. Average daily planetary A index went from 11.1 to 9, and average daily mid-latitude A index declined from 8.4 to 5.6.

Predicted solar f...

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