Sunspot drawing of 1961-4-12

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https://doi.org/10.7891/e-manuscripta-92480



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1961-04-12
06:30
Hs 1304.5:1320
https://doi.org/10.7891/e-manuscripta-92480
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
93 3 J -4.9 239.8
97 4 B 4.2 178.2
98 7 D 14.1 136.9
99 4 J 3.1 131.3
4 18