Sunspot drawing of 2012-9-20

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https://doi.org/10.7891/e-manuscripta-156998



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2012-09-20
08:30
Hs 1304.6:9695
https://doi.org/10.7891/e-manuscripta-156998
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
241 2 4 J -12.4 300.7
243 2 5 C -13.4 276.9
245 4 9 C -23.4 300.5
247 7 11 D 7.2 180.5
248 2 6 G -22.4 175.7
5 17 35