Sunspot drawing of 1977-9-18

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https://doi.org/10.7891/e-manuscripta-98639



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1977-09-18
08:30
Hs 1304.5:6399
https://doi.org/10.7891/e-manuscripta-98639
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
108 8 C 16.7 207.3
109 47 E 7.6 196.9
110 4 J 24.2 113.7
111 6 C -25.2 98.4
4 65