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The K7RA Solar Update

A

ARRL

Well-Known Member
Nov 15, 2008
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This week (September 1 to 7) two new sunspot groups emerged on September 1, two more on September 2, one more on September 5, another on September 6 another on September 7 and one more on September 8 when the sunspot number rose to 75, 7 points above the average for the previous seven days.

But average daily sunspot numbers declined from 74.9 to 68, while average daily solar flux rose just two ...

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