Sunspot drawing of 1981-4-30

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https://doi.org/10.7891/e-manuscripta-139069



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1981-04-30
09:30
Hs 1304.6:102
https://doi.org/10.7891/e-manuscripta-139069
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
209 3 5 J 16 30
210 4 5 J 3 20
211 15 8 B 2 27
213 1 3 J 20 343
214 2 2 A 4 345
216 1 2 A 6 96
217 1 1 A 25 29
218 6 10 B -8 334
219 1 3 J 7 321
220 8 12 C 16 313
221 1 3 J 4 307
11 43 54