Sunspot drawing of 2012-9-13

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https://doi.org/10.7891/e-manuscripta-157154



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2012-09-13
08:45
Hs 1304.6:9688
https://doi.org/10.7891/e-manuscripta-157154
Observer : Marco Cagnotti
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
237 1 3 J 22.9 14.5
241 7 11 D -12.5 298.6
242 1 3 J -12.7 290.3
243 3 4 C -13.4 276.7
4 12 21