Sunspot drawing of 1981-1-16

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https://doi.org/10.7891/e-manuscripta-139072



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1981-01-16
09:00
Hs 1304.6:14
https://doi.org/10.7891/e-manuscripta-139072
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
10 16 23 C 4 346
16 7 13 B -17 338
17 1 1 A 11 332
22 13 21 D 4 279
24 3 8 H -21 249
25 1 3 J 18 240
6 41 69