Sunspot drawing of 2018-4-19

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https://doi.org/10.7891/e-manuscripta-159892



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2018-04-19
07:30
Hs 1304.6:11193
https://doi.org/10.7891/e-manuscripta-159892
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
9 2 2 B 2.9 282.0
1 2 2