Sunspot drawing of 1977-8-18

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https://doi.org/10.7891/e-manuscripta-98644



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1977-08-18
13:30
Hs 1304.5:6373
https://doi.org/10.7891/e-manuscripta-98644
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
90 9 B 19.1 241.9
93 10 B 26.5 213.4
95 9 B 21.4 177.3
96 2 A -27.8 154.2
4 30