Sunspot drawing of 2017-4-7

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https://doi.org/10.7891/e-manuscripta-159590



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2017-04-07
08:15
Hs 1304.6:10899
https://doi.org/10.7891/e-manuscripta-159590
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
26 3 5 C -9.7 14.4
29 2 2 B -3.7 291.5
2 5 7