Sunspot drawing of 2016-9-12

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https://doi.org/10.7891/e-manuscripta-159257



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2016-09-12
08:15
Hs 1304.6:10753
https://doi.org/10.7891/e-manuscripta-159257
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
165 6 10 D 7.6 219.5
172 7 10 D 14.3 173.4
174 3 5 C 5.5 143.6
175 2 2 B 7.3 190.1
4 18 27