Sunspot drawing of 1964-12-23

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https://doi.org/10.7891/e-manuscripta-94129



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1964-12-23
12:30
Hs 1304.5:2472
https://doi.org/10.7891/e-manuscripta-94129
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
90 5 J 32.9 351.9
91 5 C 34.2 341.0
2 10