Sunspot drawing of 1987-6-2

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https://doi.org/10.7891/e-manuscripta-142859
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1987-06-02
07:15
Hs 1304.6:1920
https://doi.org/10.7891/e-manuscripta-142859
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
50 5 5 B 22 249
1 5 5