Sunspot drawing of 1961-12-15

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https://doi.org/10.7891/e-manuscripta-92723



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1961-12-15
10:00
Hs 1304.5:1534
https://doi.org/10.7891/e-manuscripta-92723
Observer : Sergio Cortesi
Seeing (SIDC) : 1
Group Not Weighted Weighted Type Latitude Carrington Longit.
335 3 3 B -9.3 137.9
1 3 3