Sunspot drawing of 2001-4-21

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https://doi.org/10.7891/e-manuscripta-151522



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2001-04-21
12:00
Hs 1304.6:6192
https://doi.org/10.7891/e-manuscripta-151522
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
148 2 4 J 8 226
151 11 14 C 8 215
152 21 36 E 17 156
153 3 3 B 20 246
154 10 17 D -20 194
155 3 5 C -11 197
156 1 3 J -10 123
7 51 82