Sunspot drawing of 1964-12-22

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https://doi.org/10.7891/e-manuscripta-94118



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1964-12-22
09:30
Hs 1304.5:2471
https://doi.org/10.7891/e-manuscripta-94118
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
89 5 B -10.6 25.5
90 5 J 32.9 353.1
91 5 C 33.9 342.3
3 15