Sunspot drawing of 1971-4-8

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https://doi.org/10.7891/e-manuscripta-96965



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1971-04-08
09:15
Hs 1304.5:4424
https://doi.org/10.7891/e-manuscripta-96965
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
111 10 J 14.3 271.3
112 5 J -14.0 262.8
113 1 A -21.3 259.7
114 18 C 10.2 334.6
115 3 J -4.1 246.3
116 2 A -8.7 291.8
6 39