Sunspot drawing of 1977-1-18

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https://doi.org/10.7891/e-manuscripta-98763



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1977-01-18
09:30
Hs 1304.5:6197
https://doi.org/10.7891/e-manuscripta-98763
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
4 12 C -29.6 211.2
6 5 B 21.7 139.7
7 4 B 16.8 189.4
3 21