Sunspot drawing of 2017-9-4

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https://doi.org/10.7891/e-manuscripta-159448



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2017-09-04
08:30
Hs 1304.6:11028
https://doi.org/10.7891/e-manuscripta-159448
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
69 24 39 D -8.4 117.5
72 17 29 F 13.1 103.9
73 2 4 C -4.9 176.9
74 6 8 B -9.4 165.4
75 1 2 A 17.6 49.3
5 50 82