Sunspot drawing of 1961-2-28

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https://doi.org/10.7891/e-manuscripta-92600



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1961-02-28
14:15
Hs 1304.5:1276
https://doi.org/10.7891/e-manuscripta-92600
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
44 5 5 B -11.6 104.6
47 1 4 J 6.8 60.0
2 6 9