Sunspot drawing of 1973-2-4

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https://doi.org/10.7891/e-manuscripta-97332



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1973-02-04
08:30
Hs 1304.5:4974
https://doi.org/10.7891/e-manuscripta-97332
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 14 C -8.6 73.1
36 14 A 15.8 115.2
2 28