Sunspot drawing of 1981-1-20

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https://doi.org/10.7891/e-manuscripta-139074



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1981-01-20
12:45
Hs 1304.6:18
https://doi.org/10.7891/e-manuscripta-139074
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
22 18 22 D 4 279
24 17 22 H -22 249
26 8 11 B 15 238
27 4 6 C 8 193
28 1 3 J -3 187
29 1 3 J -8 187
30 1 3 J -24 177
7 50 70