Sunspot drawing of 1973-2-1

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https://doi.org/10.7891/e-manuscripta-97446



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1973-02-01
09:30
Hs 1304.5:4971
https://doi.org/10.7891/e-manuscripta-97446
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
30 2 A 9.4 151.6
1 2