Sunspot drawing of 1973-5-18

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https://doi.org/10.7891/e-manuscripta-97342



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1973-05-18
15:30
Hs 1304.5:5068
https://doi.org/10.7891/e-manuscripta-97342
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
116 5 B -9.3 198.4
117/118 36 D 10.3 150.2
119 1 A -7.5 153.5
3 42