Sunspot drawing of 2011-4-7

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https://doi.org/10.7891/e-manuscripta-156973



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2011-04-07
07:30
Hs 1304.6:9267
https://doi.org/10.7891/e-manuscripta-156973
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
43 1 3 J 14.3 141.1
47 8 10 D 14.9 112.5
49 5 7 C 21.8 33.9
50 8 7 B 21.6 11.9
51 2 1 A 16.4 28.7
52 2 2 B -20.1 353.0
6 26 30