Sunspot drawing of 1988-4-21

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https://doi.org/10.7891/e-manuscripta-143656



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1988-04-21
07:30
Hs 1304.6:2183
https://doi.org/10.7891/e-manuscripta-143656
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
76 1 3 J -15 316
79 25 37 D 23 282
79A 6 10 C 23 265
82 35 30 B 24 241
85 6 8 A -14 238
86 1 3 A -26 157
6 74 91