Sunspot drawing of 2017-4-23

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https://doi.org/10.7891/e-manuscripta-159423



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2017-04-23
06:30
Hs 1304.6:10915
https://doi.org/10.7891/e-manuscripta-159423
Observer : Andrea Manna
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
33 5 9 D 11.1 69.6
35 2 6 D -9.1 26.5
2 7 15