Sunspot drawing of 2011-9-21

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https://doi.org/10.7891/e-manuscripta-156801



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2011-09-21
08:00
Hs 1304.6:9412
https://doi.org/10.7891/e-manuscripta-156801
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
197 25 30 D 21.9 57.2
199 2 2 B 24.4 37.2
203 1 3 J 23.7 96.0
204 4 4 B -20.6 63.8
206 10 16 D 19.0 327.5
5 42 55