Sunspot drawing of 1974-12-29

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https://doi.org/10.7891/e-manuscripta-97833



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1974-12-29
08:45
Hs 1304.5:5572
https://doi.org/10.7891/e-manuscripta-97833
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
210 6 B 14.4 4.2
211 3 A -8.9 243.4
2 9