Sunspot drawing of 1977-10-18

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https://doi.org/10.7891/e-manuscripta-98859



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1977-10-18
07:30
Hs 1304.5:6423
https://doi.org/10.7891/e-manuscripta-98859
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
129 7 J 19.0 158.8
132 6 B 18.0 173.3
133 10 C 22.6 108.7
135 20 C 22.4 146.4
136 1 A 21.4 128.9
137 2 B -24.9 84.7
6 46