Sunspot drawing of 1991-2-21

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https://doi.org/10.7891/e-manuscripta-145880



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1991-02-21
08:15
Hs 1304.6:3088
https://doi.org/10.7891/e-manuscripta-145880
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
73 3 5 C 23 286
74 24 20 D -13 264
77 7 4 B -18 258
78 35 27 D -16 230
81 17 13 C 29 228
82 3 5 C -4 227
83 35 33 E -13 193
84 51 52 D -20 196
85 3 4 C -8 303
86 4 3 B 7 274
88 11 14 C 12 188
90 11 10 C 17 174
91 1 1 A 12 200
92 1 3 J -10 150
14 206 194