Sunspot drawing of 1974-2-10

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https://doi.org/10.7891/e-manuscripta-97744



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1974-02-10
08:00
Hs 1304.5:5294
https://doi.org/10.7891/e-manuscripta-97744
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
14 5 B 7.8 215.1
15 10 D -17.2 201.5
2 15