Sunspot drawing of 1981-4-7

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https://doi.org/10.7891/e-manuscripta-139114



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1981-04-07
07:00
Hs 1304.6:84
https://doi.org/10.7891/e-manuscripta-139114
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
158A 9 11 C -6 5
162 3 5 J 18 345
164 3 6 C 7 330
165 1 3 J 8 316
166 33 27 C 8 304
169 33 41 E 18 291
170 16 18 D 4 334
171 8 7 B 5 320
172 3 3 A -8 274
173 4 3 A 12 330
174 2 2 A -19 327
175 9 11 C 22 280
176 1 3 J 21 247
13 125 140