Sunspot drawing of 1988-4-30

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https://doi.org/10.7891/e-manuscripta-143660



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1988-04-30
07:30
Hs 1304.6:2192
https://doi.org/10.7891/e-manuscripta-143660
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
87 2 5 J -19 131
88 12 24 C -18 108
91 1 2 A -23 137
92 2 5 B -20 114
4 17 36