Sunspot drawing of 2017-2-17

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https://doi.org/10.7891/e-manuscripta-159384



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2017-02-17
07:45
Hs 1304.6:10859
https://doi.org/10.7891/e-manuscripta-159384
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
15 3 4 A 10.9 183.3
1 3 4