Sunspot drawing of 1981-3-20

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https://doi.org/10.7891/e-manuscripta-139182



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1981-03-20
09:15
Hs 1304.6:72
https://doi.org/10.7891/e-manuscripta-139182
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
124A 11 15 C 14 264
135 29 24 H 8 209
137 9 7 B 13 191
138 7 11 C 19 175
139 7 11 C 11 167
140 13 19 D 14 145
141 1 1 A -4 189
142 4 6 C -18 139
143 1 3 J 19 130
9 82 97