Sunspot drawing of 2016-2-18

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https://doi.org/10.7891/e-manuscripta-159291



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2016-02-18
08:45
Hs 1304.6:10583
https://doi.org/10.7891/e-manuscripta-159291
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
43 1 3 J 4.0 326.1
44 2 2 B 7.9 17.9
45 3 3 B 4.3 3.5
3 6 8