Sunspot drawing of 2011-2-23

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https://doi.org/10.7891/e-manuscripta-156709



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2011-02-23
08:30
Hs 1304.6:9233
https://doi.org/10.7891/e-manuscripta-156709
Observer : Marco Cagnotti
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
17 3 7 D 11
18 3 5 C 18
2 6 12