New sunspot group 2739 appeared on April 17, and the daily sunspot number rose to 24. The new sunspot has a polarity indicating it is still part of old cycle 24, the current sunspot cycle. This reporting week (April 11-17) the average daily sunspot number rose from 6.9 to 14, while average daily solar flux increased from 75.4 to 76.4.
Sunspots have been visible on every day since April 7, so as ...
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Sunspots have been visible on every day since April 7, so as ...
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