Sunspot drawing of 1974-1-21

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https://doi.org/10.7891/e-manuscripta-97936



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1974-01-21
08:30
Hs 1304.5:5283
https://doi.org/10.7891/e-manuscripta-97936
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
6 5 J -18.0 191.8
7 1 A -15.1 182.4
8 4 B -14.3 172.4
10 10 B 5.6 195.1
4 20