Sunspot drawing of 1973-4-18

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https://doi.org/10.7891/e-manuscripta-97612



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1973-04-18
07:30
Hs 1304.5:5043
https://doi.org/10.7891/e-manuscripta-97612
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
95 4 B 11.1 149.9
96 3 J 9.2 147.3
2 7