Sunspot drawing of 1991-1-18

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https://doi.org/10.7891/e-manuscripta-145923



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1991-01-18
08:30
Hs 1304.6:3056
https://doi.org/10.7891/e-manuscripta-145923
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
11 19 34 F 15 19
12 1 2 A -22 359
13 30 27 D -7 352
14 2 3 A -13 354
15 3 6 C -21 338
17 19 25 D -13 338
18 3 5 C 27 329
19 3 3 B -28 286
20 7 12 D 22 278
9 87 117