Sunspot drawing of 1974-9-24

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https://doi.org/10.7891/e-manuscripta-97710



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1974-09-24
09:30
Hs 1304.5:5492
https://doi.org/10.7891/e-manuscripta-97710
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
156 8 B 12.5 136.7
1 8