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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,596
51
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Several readers pointed out those averages for the various indicators we track were all wrong last week. Average daily sunspot number was 12.1 instead of 5, although the rest of the text in the bulletin was correct. Likewise, average daily solar flux was 73.2 instead of 71.

And average daily planetary A index was 11.3 instead of 5, and mid-latitude A index was really 6.9 instead of 6.

The current...

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