Sunspot drawing of 2010-2-20

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https://doi.org/10.7891/e-manuscripta-156407



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2010-02-20
09:15
Hs 1304.6:8947
https://doi.org/10.7891/e-manuscripta-156407
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
10 6 10 D -19.5 120.5
1 6 10