Sunspot drawing of 2011-1-31

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https://doi.org/10.7891/e-manuscripta-156796



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2011-01-31
08:45
Hs 1304.6:9215
https://doi.org/10.7891/e-manuscripta-156796
Observer : Renzo Ramelli
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
8 9 13 D -21.3 182.6
1 9 13