Sunspot drawing of 2017-2-7

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https://doi.org/10.7891/e-manuscripta-159460



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2017-02-07
09:00
Hs 1304.6:10855
https://doi.org/10.7891/e-manuscripta-159460
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
13 2 2 B 4.1 297.2
1 2 2