Sunspot drawing of 1971-2-21

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https://doi.org/10.7891/e-manuscripta-96947



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1971-02-21
07:30
Hs 1304.5:4384
https://doi.org/10.7891/e-manuscripta-96947
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
51 7 D 17.5 215.8
54 3 J -13.2 201.9
55 8 J -13.2 189.1
56 37 E -17.4 142.0
57 7 C -6.9 126.0
58 11 C 20.4 231.5
60 3 J -9.6 107.6
7 76