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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
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Here are some yearly averages that we have neglected at the beginning of the year.* These are the average daily sunspot numbers for whole calendar years, from 1994-2011: 48.1, 28.7, 13.2, 30.7, 88.7, 136.3, 173, 170.3, 176.7, 109.2, 68.6, 48.9, 26.1, 12.8, 4.7, 5.1, 25.5 and 29.9. You can see from these numbers that the minimum between Solar Cycles 22-23 -- centered around 1996 -- was over quic...





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