Sunspot drawing of 1963-2-21

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https://doi.org/10.7891/e-manuscripta-93635



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1963-02-21
09:30
Hs 1304.5:1908
https://doi.org/10.7891/e-manuscripta-93635
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 9 C 9.0 209.2
24 6 B 5.9 223.4
2 15