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The K7RA Solar Update

A

ARRL

Well-Known Member
Nov 15, 2008
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Tad Cook, K7RA, Seattle, reports: Solar and geomagnetic activity increased this week. The average daily sunspot number was up by 52 points, rising from 42.4 to 94.4. The sunspot number peaked at 120 last Saturday, January 15.


Average daily solar flux went from 101.6 to 112, peaking at 119.4 on Sunday, January 16. Average daily planetary A index rose from 6.1 to 15.6, and average middle latitude ...

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