Sunspot drawing of 2017-4-4

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https://doi.org/10.7891/e-manuscripta-159577



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2017-04-04
07:45
Hs 1304.6:10896
https://doi.org/10.7891/e-manuscripta-159577
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
24 3 7 D 12.8 54.1
26 18 35 E -10.1 16.7
28 5 5 B 14.7 35.9
29 8 11 B -3.5 288.9
4 34 58