Sunspot drawing of 1981-2-13

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https://doi.org/10.7891/e-manuscripta-139200



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1981-02-13
09:45
Hs 1304.6:42
https://doi.org/10.7891/e-manuscripta-139200
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
62 2 5 J 12 341
67 35 31 D 11 328
70 1 1 A 22 337
73 4 5 B -16 340
74 18 16 C 12 336
76 3 5 C 9 6
78 8 10 C -8 321
79 19 16 C 19 261
80 3 5 H 11 259
81 1 3 J -19 257
84 5 8 C 15 238
11 99 105