Sunspot drawing of 1991-3-20

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https://doi.org/10.7891/e-manuscripta-145984



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1991-03-20
08:15
Hs 1304.6:3108
https://doi.org/10.7891/e-manuscripta-145984
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
117 26 36 D -9 289
118 8 10 C -24 272
123 2 2 B -15 240
124 14 19 C 21 259
125 9 11 J -2 230
126 9 7 B -16 225
132 1 3 J -13 194
133 66 60 E -25 189
134 4 6 C 14 268
135 14 15 B -13 219
136 1 4 J -29 328
137 1 3 J -20 158
12 155 176