Sunspot drawing of 1977-12-21

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https://doi.org/10.7891/e-manuscripta-98686



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1977-12-21
08:30
Hs 1304.5:6476
https://doi.org/10.7891/e-manuscripta-98686
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
177 2 A 14.8 33.1
179 8 C 21.1 325.7
182 2 A -26.4 357.4
3 12