Sunspot drawing of 1961-4-17

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https://doi.org/10.7891/e-manuscripta-92580



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1961-04-17
13:00
Hs 1304.5:1324
https://doi.org/10.7891/e-manuscripta-92580
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
98 22 E 13.7 139.9
99 10 D 3.0 130.7
102 1 A -9.0 108.8
103 3 J 8.3 65.5
104 9 B -12.1 63.7
105 3 B 2.5 184.2
106 3 B -11.1 48.0
7 51