Sunspot drawing of 1977-9-20

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https://doi.org/10.7891/e-manuscripta-98668



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1977-09-20
09:05
Hs 1304.5:6401
https://doi.org/10.7891/e-manuscripta-98668
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
108 1 A 16.6 211.0
109 20 C 7.8 200.0
110 2 A 24.4 114.4
111 24 D -23.4 98.8
4 47