Sunspot drawing of 1961-2-15

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https://doi.org/10.7891/e-manuscripta-92551
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1961-02-15
09:15
Hs 1304.5:1265
https://doi.org/10.7891/e-manuscripta-92551
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 7 12 D 3.5 291.9
39 1 2 A -11.5 299.1
40 2 4 B -16.9 267.0
3 10 18