Sunspot drawing of 1987-7-7

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https://doi.org/10.7891/e-manuscripta-142963



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1987-07-07
09:30
Hs 1304.6:1949
https://doi.org/10.7891/e-manuscripta-142963
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
66 1 3 B -19 113
1 1 3