Sunspot drawing of 1961-12-21

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https://doi.org/10.7891/e-manuscripta-92760



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1961-12-21
10:00
Hs 1304.5:1540
https://doi.org/10.7891/e-manuscripta-92760
Observer : Sergio Cortesi
Seeing (SIDC) : 1
Group Not Weighted Weighted Type Latitude Carrington Longit.
337 13 E -3.9 21.3
1 13