Sunspot drawing of 1977-4-18

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https://doi.org/10.7891/e-manuscripta-98701



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1977-04-18
07:00
Hs 1304.5:6269
https://doi.org/10.7891/e-manuscripta-98701
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 12 D -19.9 25.5
33 3 B -25.7 58.1
34 2 B -22.6 15.0
3 17