Sunspot drawing of 1991-4-21

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https://doi.org/10.7891/e-manuscripta-145936



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1991-04-21
09:00
Hs 1304.6:3133
https://doi.org/10.7891/e-manuscripta-145936
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
171 1 3 J -26 264
180 22 29 D 7 245
188 9 9 B 13 216
191 3 5 C -19 243
192 13 13 C -10 190
194 5 4 B -23 175
197 5 7 C 16 224
201 7 6 B -17 183
206 5 3 A -28 172
9 70 79