Sunspot drawing of 1981-4-21

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https://doi.org/10.7891/e-manuscripta-139087



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1981-04-21
07:30
Hs 1304.6:96
https://doi.org/10.7891/e-manuscripta-139087
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
182 4 9 D 10 220
188 24 24 C -8 194
190 4 5 C 23 177
191 6 3 B 18 172
193 45 33 D 14 149
195 1 3 J 13 212
196 10 12 C 24 144
197 3 5 J -10 146
198 1 3 J 24 204
199 1 2 A 18 215
201 7 9 D 8 156
202 7 5 B -10 138
203 2 2 B -10 69
204 3 3 A -41 78
14 118 118