Sunspot drawing of 2017-2-25

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https://doi.org/10.7891/e-manuscripta-159497



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2017-02-25
09:45
Hs 1304.6:10867
https://doi.org/10.7891/e-manuscripta-159497
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
17 2 2 B 18.8 109.7
18 1 3 J 16.0 107.7
19 3 4 B -8.6 152.5
3 6 9