Sunspot drawing of 1961-2-13

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https://doi.org/10.7891/e-manuscripta-92617



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1961-02-13
08:30
Hs 1304.5:1263
https://doi.org/10.7891/e-manuscripta-92617
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 15 21 D 3.9 291.1
36 1 2 A -9.4 267.1
2 16 23