Sunspot drawing of 2011-12-21

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https://doi.org/10.7891/e-manuscripta-156958



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2011-12-21
08:30
Hs 1304.6:9481
https://doi.org/10.7891/e-manuscripta-156958
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
309 9 18 D 17.9 306.8
313 2 2 A -21.2 232.5
314 4 6 C -18.4 265.6
315 12 21 D -17.7 259.0
316 1 2 A 2.5 209.5
317 8 12 C 12.3 197.7
6 36 61