Sunspot drawing of 1963-4-20

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https://doi.org/10.7891/e-manuscripta-93558



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1963-04-20
07:00
Hs 1304.5:1958
https://doi.org/10.7891/e-manuscripta-93558
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
52 22 D -11.7 247.2
1 22