Sunspot drawing of 1977-4-12

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https://doi.org/10.7891/e-manuscripta-98825



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1977-04-12
07:30
Hs 1304.5:6263
https://doi.org/10.7891/e-manuscripta-98825
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 10 D -20.1 25.8
1 10