Sunspot drawing of 1961-1-20

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https://doi.org/10.7891/e-manuscripta-92574



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1961-01-20
09:30
Hs 1304.5:1241
https://doi.org/10.7891/e-manuscripta-92574
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
12 24 D -4.8 214.6
13 5 C -5.4 163.7
15 2 A -10.4 162.1
3 31