Sunspot drawing of 2017-4-11

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https://doi.org/10.7891/e-manuscripta-159525



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2017-04-11
08:00
Hs 1304.6:10903
https://doi.org/10.7891/e-manuscripta-159525
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
30 3 6 B 8.4 189.4
1 3 6