Sunspot drawing of 1977-9-9

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https://doi.org/10.7891/e-manuscripta-98743



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1977-09-09
07:30
Hs 1304.5:6390
https://doi.org/10.7891/e-manuscripta-98743
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
103 3 J 22.9 316.4
108 2 A 16.3 205.8
109 15 D 7.8 197.2
3 20