Sunspot drawing of 1987-8-12

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https://doi.org/10.7891/e-manuscripta-142843



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1987-08-12
08:30
Hs 1304.6:1984
https://doi.org/10.7891/e-manuscripta-142843
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
78 7 14 D -23 47
80 15 26 D -26 284
81 2 2 A 23 306
82 2 10 D -30 247
4 26 52