Sunspot drawing of 2002-4-18

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https://doi.org/10.7891/e-manuscripta-151897



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2002-04-18
07:00
Hs 1304.6:6503
https://doi.org/10.7891/e-manuscripta-151897
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
159 1 3 J 17.9 180.0
163 1 3 J 10.5 166.0
165 25 30 D -14.8 149.6
166 15 13 D -3.3 118.6
167 3 7 C 7.0 83.1
169 13 15 D -19.6 89.2
171 1 1 A -12.7 75.3
172 2 4 C 9.8 69.6
8 61 76