Sunspot drawing of 2016-4-1

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https://doi.org/10.7891/e-manuscripta-159168



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2016-04-01
10:00
Hs 1304.6:10616
https://doi.org/10.7891/e-manuscripta-159168
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
79 1 4 J -3.2 175.7
1 1 4