Sunspot drawing of 2017-9-27

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https://doi.org/10.7891/e-manuscripta-159645



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2017-09-27
09:15
Hs 1304.6:11048
https://doi.org/10.7891/e-manuscripta-159645
Observer : Marco Cagnotti
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
79 2 4 C -13.1 179.6
80 2 6 J -10.7 126.7
81 2 7 J 12.9 111.8
3 6 17