Sunspot drawing of 1990-4-20

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https://doi.org/10.7891/e-manuscripta-145089



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1990-04-20
09:45
Hs 1304.6:2819
https://doi.org/10.7891/e-manuscripta-145089
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
202A 21 24 D -32 4
204 67 42 D -13 334
206 42 33 D 31 344
211 5 4 B -13 348
215 1 1 A 21 330
216 1 2 A 25 300
217 4 4 B 12 35
218 3 2 A -35 320
219 20 16 D -13 320
220 30 22 C -19 313
222 2 8 C 24 289
223 7 8 C 11 267
224 7 10 B 16 18
225 4 4 B 14 323
226 2 5 J -8 256
227 2 5 C 29 253
16 218 190