Sunspot drawing of 1974-4-5

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https://doi.org/10.7891/e-manuscripta-97850



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1974-04-05
13:30
Hs 1304.5:5333
https://doi.org/10.7891/e-manuscripta-97850
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
37 2 A -11.5 286.9
39 20 B 11.6 257.8
2 22