Sunspot drawing of 2018-9-17

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https://doi.org/10.7891/e-manuscripta-160094



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2018-09-17
07:30
Hs 1304.6:11328
https://doi.org/10.7891/e-manuscripta-160094
Observer : Marco Cagnotti
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
31 3 3 B -6.6 204.3
1 3 3