Sunspot drawing of 1988-5-21

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https://doi.org/10.7891/e-manuscripta-143900



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1988-05-21
07:15
Hs 1304.6:2207
https://doi.org/10.7891/e-manuscripta-143900
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
108 6 7 B -16 272
110 2 3 A -20 140
111 5 3 B 5 232
3 13 13