Sunspot drawing of 2012-4-17

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https://doi.org/10.7891/e-manuscripta-157085



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2012-04-17
08:30
Hs 1304.6:9568
https://doi.org/10.7891/e-manuscripta-157085
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
89 6 9 C 5.5 213.2
93 7 12 C 15.3 107.4
94 2 5 J 11.9 69.8
95 12 25 D -17.0 91.8
4 27 51