Sunspot drawing of 2015-7-17

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https://doi.org/10.7891/e-manuscripta-158783



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2015-07-17
08:30
Hs 1304.6:10418
https://doi.org/10.7891/e-manuscripta-158783
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
176 1 3 J -17.7 10.7
180 3 5 C 10.7 309.9
181 2 2 B 7.1 24.0
182 5 8 C 15.9 269.0
4 11 18