Sunspot drawing of 2017-9-13

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https://doi.org/10.7891/e-manuscripta-159523



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2017-09-13
07:15
Hs 1304.6:11035
https://doi.org/10.7891/e-manuscripta-159523
Observer : Marco Cagnotti
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
78 2 5 J 9.0 316.4
79 1 1 A -9.3 20.3
2 3 6