Sunspot drawing of 1974-9-2

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https://doi.org/10.7891/e-manuscripta-97894



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1974-09-02
08:30
Hs 1304.5:5471
https://doi.org/10.7891/e-manuscripta-97894
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
142 3 J -7.8 20.7
1 3