Sunspot drawing of 1974-1-22

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https://doi.org/10.7891/e-manuscripta-97946



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1974-01-22
09:00
Hs 1304.5:5284
https://doi.org/10.7891/e-manuscripta-97946
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
6 4 J -18.3 191.4
7 4 A -16.9 184.3
10 20 C 5.2 196.7
3 28