Sunspot drawing of 1973-4-21

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https://doi.org/10.7891/e-manuscripta-97517



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1973-04-21
07:30
Hs 1304.5:5046
https://doi.org/10.7891/e-manuscripta-97517
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
95 24 D 11.5 150.8
96 5 J 9.2 147.7
97 16 C -15.9 183.2
3 45