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By P Gosselin on 16. March 2016
Share this…FacebookTwitterThe Sun in February 2016 By Frank Bosse und Fritz Vahrenholt Translated/edited by P Gosselin In February 2016 the sun was well below normal in activity, just as was the case for the previous several months. The observed sunspot number (SSN) was 57.2. The mean of previous cycles 1 to 23 for this month […]