Sunspot drawing of 1973-4-16

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https://doi.org/10.7891/e-manuscripta-97359



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1973-04-16
07:30
Hs 1304.5:5041
https://doi.org/10.7891/e-manuscripta-97359
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 19 D -8.2 324.3
93 2 A 241.8
94 2 A 16.4 217.6
3 23