Sunspot drawing of 2017-5-12

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https://doi.org/10.7891/e-manuscripta-159588



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2017-05-12
09:00
Hs 1304.6:10927
https://doi.org/10.7891/e-manuscripta-159588
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
38 1 1 A 6.9 213.4
39 1 1 A 7.8 114.7
2 2 2