Sunspot drawing of 1981-2-23

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https://doi.org/10.7891/e-manuscripta-139140



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1981-02-23
10:15
Hs 1304.6:51
https://doi.org/10.7891/e-manuscripta-139140
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
84 1 3 J 15 238
86 9 9 C 12 183
90 61 41 D 11 199
92 6 10 H -18 133
93 20 28 D -17 101
94 1 1 A -14 128
95 1 3 J -8 97
96 1 1 A 15 101
8 100 96