Sunspot drawing of 1987-7-10

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https://doi.org/10.7891/e-manuscripta-142926



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1987-07-10
07:00
Hs 1304.6:1952
https://doi.org/10.7891/e-manuscripta-142926
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
66 3 4 B -18 115
1 3 4