Sunspot drawing of 2011-4-19

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https://doi.org/10.7891/e-manuscripta-156972



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2011-04-19
07:45
Hs 1304.6:9279
https://doi.org/10.7891/e-manuscripta-156972
Observer : Marco Cagnotti
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
54 4 7 J 12
56 7 7 E 8
58 28 30 E 16
61 2 4 B -17
4 41 48