Sunspot drawing of 1977-4-11

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https://doi.org/10.7891/e-manuscripta-98631



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1977-04-11
08:00
Hs 1304.5:6262
https://doi.org/10.7891/e-manuscripta-98631
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 3 J -20.9 28.0
1 3