Sunspot drawing of 1963-2-17

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https://doi.org/10.7891/e-manuscripta-93639



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1963-02-17
08:00
Hs 1304.5:1905
https://doi.org/10.7891/e-manuscripta-93639
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 3 J 8.3 340.7
23 7 J 9.4 210.2
2 10