Sunspot drawing of 1981-4-3

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https://doi.org/10.7891/e-manuscripta-139139



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1981-04-03
07:00
Hs 1304.6:81
https://doi.org/10.7891/e-manuscripta-139139
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
144 12 21 D -43 99
147 1 2 A 22 98
148 2 3 J -12 69
152 3 3 B 17 41
155 1 3 J 9 95
156 14 15 C 25 23
157 1 1 A 4 19
158 6 6 J -4 11
159 2 1 A -10 28
160 15 14 D 12 23
162 11 12 J 17 348
163 8 5 B -16 334
164 7 8 J 6 331
165 1 3 J 8 315
166 6 10 C 9 303
15 90 107