Sunspot drawing of 1983-4-20

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https://doi.org/10.7891/e-manuscripta-140275



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1983-04-20
08:00
Hs 1304.6:681
https://doi.org/10.7891/e-manuscripta-140275
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
94 4 7 C -7 286
97 5 7 B 7 237
98 18 30 D -30 309
99 3 2 A -10 275
100 2 1 A -9 254
101 10 13 C 10 218
102 5 5 C -22 205
103 6 13 C -12 174
8 53 78