Sunspot drawing of 1964-4-7

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https://doi.org/10.7891/e-manuscripta-93874



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1964-04-07
16:15
Hs 1304.5:2240
https://doi.org/10.7891/e-manuscripta-93874
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
31 1 A 27.3 165.2
32 3 J 15.1 140.1
2 4