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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 activity declined last week, and on Sunday, October 17, there were no sunspots at all. Most days had the minimum non-zero sunspot number, which is 11, indicating a single sunspot group containing a single sunspot.


Average daily sunspot number declined from 23.7 to 11.3, and average daily solar flux dropped 7 points from 85.6 to 78.6.


Geomagnetic indicators ...

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