Sunspot drawing of 2017-2-27

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https://doi.org/10.7891/e-manuscripta-159583



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2017-02-27
08:30
Hs 1304.6:10869
https://doi.org/10.7891/e-manuscripta-159583
Observer : Andrea Manna
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 1 3 J 15.2 108.2
19 2 3 B -8.3 155.2
20 10 10 D 9.3 69.2
21 1 2 A 15.6 31.1
4 14 18