Sunspot drawing of 1989-4-17

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https://doi.org/10.7891/e-manuscripta-144555



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1989-04-17
13:00
Hs 1304.6:2501
https://doi.org/10.7891/e-manuscripta-144555
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
173 18 11 H -23 154
174 1 3 J 15 141
175 8 12 G 16 205
176 11 25 C -19 161
177 22 42 F 10 127
179 1 1 A 21 140
181 7 15 D -16 82
182 4 6 J 19 82
183 5 9 C -23 67
9 77 124