Sunspot drawing of 1963-2-20

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https://doi.org/10.7891/e-manuscripta-93572



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1963-02-20
08:15
Hs 1304.5:1907
https://doi.org/10.7891/e-manuscripta-93572
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 10 C 9.1 209.0
24 5 C 5.5 224.6
2 15