Sunspot drawing of 1973-12-12

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https://doi.org/10.7891/e-manuscripta-97309



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1973-12-12
08:30
Hs 1304.5:5255
https://doi.org/10.7891/e-manuscripta-97309
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
232 3 J 1.7 305.3
1 3