Sunspot drawing of 1961-3-18

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https://doi.org/10.7891/e-manuscripta-92482



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1961-03-18
07:30
Hs 1304.5:1294
https://doi.org/10.7891/e-manuscripta-92482
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
63 1 3 J -5.7 219.8
66 18 9 C 3.5 151.5
67 1 3 J 22.7 236.3
70 2 5 B -24.0 155.5
72 1 1 A -9.3 116.5
73 6 5 B 2.4 162.9
75 1 3 J -19.8 85.3
7 30 29