Sunspot drawing of 2009-12-20

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https://doi.org/10.7891/e-manuscripta-155601



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2009-12-20
11:30
Hs 1304.6:8902
https://doi.org/10.7891/e-manuscripta-155601
Observer : Andrea Manna
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
24 7 9 E 30.1 249.1
25 3 3 B 15.5 202.9
26 7 7 C -27.8 210.4
3 17 19