Sunspot drawing of 1977-9-23

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https://doi.org/10.7891/e-manuscripta-98746



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1977-09-23
08:30
Hs 1304.5:6404
https://doi.org/10.7891/e-manuscripta-98746
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
111 24 D -23.7 99.1
112 3 B 23.4 149.9
113 1 A -17.2 23.2
114 2 A -20.6 21.7
4 30