Sunspot drawing of 1991-1-17

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https://doi.org/10.7891/e-manuscripta-145842



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1991-01-17
09:00
Hs 1304.6:3055
https://doi.org/10.7891/e-manuscripta-145842
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
11 42 50 F 15 18
12 4 4 B -23 359
13 27 27 D -7 353
14 5 4 B -14 353
15 4 3 B -21 337
16 4 3 B -8 337
17 20 16 D -14 335
18 9 10 C 27 329
19 3 3 B -28 285
20 8 10 C 22 277
21 2 3 B 4 299
11 128 133