Sunspot drawing of 1988-4-13

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https://doi.org/10.7891/e-manuscripta-143732



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1988-04-13
08:30
Hs 1304.6:2177
https://doi.org/10.7891/e-manuscripta-143732
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
68 1 3 J 18 34
69 7 10 C 25 37
71 1 5 J -31 347
72 1 3 J -19 333
73 17 31 C 16 330
76 18 20 C -14 317
77 4 3 A -17 312
78 2 2 B 20 314
79 30 40 E 23 275
9 81 117