Sunspot drawing of 1963-4-21

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https://doi.org/10.7891/e-manuscripta-93573



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1963-04-21
07:15
Hs 1304.5:1959
https://doi.org/10.7891/e-manuscripta-93573
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
52 8 C -11.4 245.3
1 8