Sunspot drawing of 1964-4-25

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https://doi.org/10.7891/e-manuscripta-93864



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1964-04-25
07:15
Hs 1304.5:2255
https://doi.org/10.7891/e-manuscripta-93864
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 9 B -9.1 350.2
1 9