Sunspot drawing of 1991-1-21

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https://doi.org/10.7891/e-manuscripta-145888



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1991-01-21
09:15
Hs 1304.6:3059
https://doi.org/10.7891/e-manuscripta-145888
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
13 14 14 C -7 355
17 11 18 D -14 339
18 3 2 B 26 330
19 5 4 B -28 283
20 14 17 D 22 276
23 2 2 A -6 271
24 2 1 A -10 236
25 3 4 B 26 219
26 6 7 C 9 212
27 1 2 A -7 217
28 18 40 E -18 203
29 2 6 H -10 197
12 81 117