Sunspot drawing of 2011-4-17

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https://doi.org/10.7891/e-manuscripta-156733



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2011-04-17
09:30
Hs 1304.6:9277
https://doi.org/10.7891/e-manuscripta-156733
Observer : Andrea Manna
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
54 15 12 C 12.3 339.3
56 4 5 C 6.9 281.0
58 26 20 E 15.5 265.1
3 45 37