Sunspot drawing of 1981-4-18

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https://doi.org/10.7891/e-manuscripta-139221



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1981-04-18
09:45
Hs 1304.6:94
https://doi.org/10.7891/e-manuscripta-139221
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
179 38 44 D 13 231
182 22 17 C 10 220
183 3 3 J -4 225
188 33 34 D -8 192
190 8 9 C 23 177
191 13 10 C 17 173
193 45 30 D 13 152
195 4 10 G 13 207
196 12 15 D 24 147
197 3 6 J -10 147
198 17 16 C 24 205
199 7 8 D 18 218
200 4 8 D 12 164
13 209 210