Sunspot drawing of 1958-4-18

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https://doi.org/10.7891/e-manuscripta-88058



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1958-04-18
09:00
Hs 1304.5:385
https://doi.org/10.7891/e-manuscripta-88058
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
169 6 7 C -9.3 253.5
178 2 3 B 12.7 241.3
180 8 6 B 19.4 223.9
181 28 26 D 17.2 173.2
182 50 51 E -21.7 148.1
183 2 4 C 22.4 146.4
184 1 4 J 38.8 148.4
185 2 4 J -8.5 129.5
186 5 9 D 12.1 115.7
187 3 6 D -25.8 204.5
188 1 3 J -21.0 181.3
189 4 5 C 34.5 179.3
12 112 128