Sunspot drawing of 1977-4-16

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https://doi.org/10.7891/e-manuscripta-98740



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1977-04-16
08:00
Hs 1304.5:6267
https://doi.org/10.7891/e-manuscripta-98740
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 16 D -19.8 26.1
33 3 B -23.9 60.3
2 19