Sunspot drawing of 1990-4-30

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https://doi.org/10.7891/e-manuscripta-145166



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1990-04-30
07:30
Hs 1304.6:2828
https://doi.org/10.7891/e-manuscripta-145166
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
227 4 3 B 26 247
228 5 7 C 16 266
231 7 7 C 13 215
232 9 10 C -4 214
234 7 12 D -21 262
239 6 9 C -18 250
240 2 5 J 21 163
241 10 7 B 14 204
242 9 6 B -9 150
243 3 2 B 14 171
244 1 3 J -14 113
11 63 71