Sunspot drawing of 2011-1-20

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https://doi.org/10.7891/e-manuscripta-156913



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2011-01-20
09:15
Hs 1304.6:9207
https://doi.org/10.7891/e-manuscripta-156913
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
4 8 10 C 23.3 343.4
6 2 3 B -29.4 62.4
2 10 13