Sunspot drawing of 2011-5-13

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https://doi.org/10.7891/e-manuscripta-156840



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2011-05-13
08:00
Hs 1304.6:9302
https://doi.org/10.7891/e-manuscripta-156840
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
86 4 7 C 10.5 320.6
88 2 3 B 18.8 348.7
96 1 1 A 23.0 316.5
3 7 11