Sunspot drawing of 2017-8-30

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https://doi.org/10.7891/e-manuscripta-159443



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2017-08-30
09:15
Hs 1304.6:11025
https://doi.org/10.7891/e-manuscripta-159443
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
67 4 6 C 6.5 229.1
69 1 3 J -9.0 118.9
71 5 8 C 10.7 107.9
72 9 16 C 15.0 98.7
4 19 33