Sunspot drawing of 1964-4-3

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https://doi.org/10.7891/e-manuscripta-93828



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1964-04-03
14:30
Hs 1304.5:2238
https://doi.org/10.7891/e-manuscripta-93828
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
29 2 A 9.2 236.5
30 1# A 11.6 202.4
2 3