Sunspot drawing of 2017-8-22

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https://doi.org/10.7891/e-manuscripta-159571



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2017-08-22
08:00
Hs 1304.6:11017
https://doi.org/10.7891/e-manuscripta-159571
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
65 10 15 C 10.1 311.7
66 13 23 D 10.9 299.7
67 11 21 D 6.6 226.0
3 34 59