Sunspot drawing of 1964-12-25

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https://doi.org/10.7891/e-manuscripta-94080



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1964-12-25
09:00
Hs 1304.5:2474
https://doi.org/10.7891/e-manuscripta-94080
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
90 5 J 33.2 349.7
91 7 C 34.3 339.8
2 12