Sunspot drawing of 1977-12-17

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https://doi.org/10.7891/e-manuscripta-98610



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1977-12-17
08:30
Hs 1304.5:6472
https://doi.org/10.7891/e-manuscripta-98610
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
175 11 C -23.0 58.3
177 5 B 14.3 37.2
178 4 A -11.8 22.3
3 20