Sunspot drawing of 1971-2-18

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https://doi.org/10.7891/e-manuscripta-96934



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1971-02-18
13:00
Hs 1304.5:4381
https://doi.org/10.7891/e-manuscripta-96934
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
51 8 D 17.6 217.0
53 6 C 13.9 269.1
54 3 J -13.2 202.3
55 8 C -13.4 188.1
56 26 E -17.3 141.8
57 3 J -7.2 127.9
6 54