Sunspot drawing of 1974-4-20

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https://doi.org/10.7891/e-manuscripta-97683



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1974-04-20
06:30
Hs 1304.5:5348
https://doi.org/10.7891/e-manuscripta-97683
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
44 2 A -8.1 56.9
47 23 D -13.5 125.3
48 14 C -9.3 119.9
50 7 B 1.8 102.9
4 46