Sunspot drawing of 1981-1-31

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https://doi.org/10.7891/e-manuscripta-139051



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1981-01-31
08:15
Hs 1304.6:29
https://doi.org/10.7891/e-manuscripta-139051
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
36 2 1 A -28 190
39 19 23 D -12 103
42 29 27 D 15 92
43 20 23 D -12 83
44 10 9 C -17 88
45 1 1 A -5 86
47 1 1 A -20 120
48 7 11 C 14 71
49 6 6 H 18 62
50 5 5 B -8 58
51 4 4 C 14 53
11 104 111