Sunspot drawing of 1964-12-17

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https://doi.org/10.7891/e-manuscripta-94125



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1964-12-17
13:30
Hs 1304.5:2470
https://doi.org/10.7891/e-manuscripta-94125
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 4 A 21.7 58.5
89 9 C -9.9 22.3
90 3 J 34.1 350.4
3 16