Sunspot drawing of 1988-4-18

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https://doi.org/10.7891/e-manuscripta-143777



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1988-04-18
07:30
Hs 1304.6:2181
https://doi.org/10.7891/e-manuscripta-143777
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
71 1 3 J -31 345
72 1 1 A -19 330
73 3 9 J 17 333
76 9 12 C -15 316
79 47 48 D 22 283
79A 16 22 C 22 266
80 5 5 B -33 328
82 30 30 C 24 242
83 3 3 A -26 300
84 1 1 A -29 255
10 116 134