Sunspot drawing of 1981-2-20

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https://doi.org/10.7891/e-manuscripta-139078



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1981-02-20
09:15
Hs 1304.6:49
https://doi.org/10.7891/e-manuscripta-139078
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
79 19 28 D 18 264
80 4 5 J 11 262
81 1 3 J -18 258
84 5 7 C 15 236
85 16 15 C 11 250
86 2 4 J 13 183
88 12 12 C -6 259
89 2 2 B 11 214
90 32 19 C 10 197
91 1 1 A 23 141
92 4 10 H -17 131
11 98 106