Sunspot drawing of 1990-4-1

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https://doi.org/10.7891/e-manuscripta-145327



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1990-04-01
07:45
Hs 1304.6:2807
https://doi.org/10.7891/e-manuscripta-145327
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
173 2 6 J 24 244
175 2 4 J -12 228
178 17 16 C -16 251
179 1 3 J -12 183
180 2 4 J -8 179
181 7 9 C 20 273
184 16 25 D 20 163
185 1 3 J -25 150
186 2 2 A 17 245
187 3 3 B -17 147
10 53 75