Sunspot drawing of 1975-2-13

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https://doi.org/10.7891/e-manuscripta-98038



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1975-02-13
15:00
Hs 1304.5:5605
https://doi.org/10.7891/e-manuscripta-98038
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 3 J 3.0 130.1
1 3