Sunspot drawing of 1961-4-6

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https://doi.org/10.7891/e-manuscripta-92502



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1961-04-06
08:45
Hs 1304.5:1313
https://doi.org/10.7891/e-manuscripta-92502
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
86 5 C -19.3 335.6
89 21 E -16.9 315.0
92 10 C -8.1 321.5
93 3 J -3.9 239.3
94 30 E 12.8 278.3
5 69