Sunspot drawing of 2018-4-17

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https://doi.org/10.7891/e-manuscripta-160041



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2018-04-17
07:00
Hs 1304.6:11191
https://doi.org/10.7891/e-manuscripta-160041
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
8 1 2 A 6.2 58.9
1 1 2