Sunspot drawing of 1987-10-1

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https://doi.org/10.7891/e-manuscripta-143065



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1987-10-01
08:15
Hs 1304.6:2032
https://doi.org/10.7891/e-manuscripta-143065
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
105 7 10 B -22 349
106 13 20 C 31 335
2 20 30