Sunspot drawing of 1963-7-21

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https://doi.org/10.7891/e-manuscripta-93732



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1963-07-21
06:15
Hs 1304.5:2039
https://doi.org/10.7891/e-manuscripta-93732
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
97 5 B 9.7 353.2
98 6 B 8.9 54.0
2 11