Sunspot drawing of 2015-12-19

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https://doi.org/10.7891/e-manuscripta-158771



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2015-12-19
09:00
Hs 1304.6:10540
https://doi.org/10.7891/e-manuscripta-158771
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
320 1 1 A -15.4 125.4
321 3 3 B 19.4 96.9
322 17 16 D 13.2 80.5
3 21 20