Sunspot drawing of 2011-4-10

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https://doi.org/10.7891/e-manuscripta-156894



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2011-04-10
09:15
Hs 1304.6:9270
https://doi.org/10.7891/e-manuscripta-156894
Observer : Andrea Manna
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
50 9 9 C 21.6 12.2
51 15 11 C 15.7 26.0
52 2 3 B -19.0 353.9
3 26 23