Sunspot drawing of 2011-4-11

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https://doi.org/10.7891/e-manuscripta-156970



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2011-04-11
07:30
Hs 1304.6:9271
https://doi.org/10.7891/e-manuscripta-156970
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
50 12 12 C 21.0 13.6
51 11 10 C 15.1 27.0
52 2 1 A -19.3 353.9
54 2 2 A 11.7 340.7
4 27 25