Sunspot drawing of 1961-12-18

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https://doi.org/10.7891/e-manuscripta-92732



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1961-12-18
09:30
Hs 1304.5:1537
https://doi.org/10.7891/e-manuscripta-92732
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
336 4 A 12.6 66.6
1 4