Sunspot drawing of 2017-7-15

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https://doi.org/10.7891/e-manuscripta-159591



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2017-07-15
09:00
Hs 1304.6:10984
https://doi.org/10.7891/e-manuscripta-159591
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
56 14 19 D -4.9 113.4
58 3 3 A 13.5 103.1
2 17 22