Sunspot drawing of 1974-9-25

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https://doi.org/10.7891/e-manuscripta-97757



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1974-09-25
08:00
Hs 1304.5:5493
https://doi.org/10.7891/e-manuscripta-97757
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
156 8 D 12.8 137.3
1 8