Sunspot drawing of 1987-9-24

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https://doi.org/10.7891/e-manuscripta-142775



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1987-09-24
08:00
Hs 1304.6:2026
https://doi.org/10.7891/e-manuscripta-142775
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
101 1 4 J 13 132
102 1 3 J -30 191
2 2 7