Sunspot drawing of 1974-2-24

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https://doi.org/10.7891/e-manuscripta-97739



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1974-02-24
08:00
Hs 1304.5:5302
https://doi.org/10.7891/e-manuscripta-97739
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 7 D -18.6 148.0
19 8 D -16.9 136.3
20 2 B 13.5 18.2
3 17