Sunspot drawing of 1963-4-15

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https://doi.org/10.7891/e-manuscripta-93675



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1963-04-15
07:30
Hs 1304.5:1954
https://doi.org/10.7891/e-manuscripta-93675
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
50 5 C -19.4 251.9
52 42 D -11.3 246.7
53 3 B -16.9 241.4
3 50