Sunspot drawing of 2017-5-20

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https://doi.org/10.7891/e-manuscripta-159389



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2017-05-20
08:00
Hs 1304.6:10933
https://doi.org/10.7891/e-manuscripta-159389
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
40 1 1 A 6.6 105.9
41 1 3 J 10.9 65.9
42 3 4 B -8.0 67.9
3 5 8