Sunspot drawing of 1981-4-4

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https://doi.org/10.7891/e-manuscripta-139209



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1981-04-04
10:15
Hs 1304.6:82
https://doi.org/10.7891/e-manuscripta-139209
Observer : Roberto Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
148 1 2 A -11 70
152 3 4 A 17 38
156 4 6 B 25 23
158 3 5 B -3 13
160 11 13 B 14 21
162 12 14 J 18 347
164 13 18 J 6 331
165 3 16 J 8 315
166 8 11 C 9 300
167 2 3 B 23 70
168 2 3 A 27 331
169 10 26 D 19 288
12 72 121