Sunspot drawing of 1977-8-17

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https://doi.org/10.7891/e-manuscripta-98773



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1977-08-17
14:00
Hs 1304.5:6372
https://doi.org/10.7891/e-manuscripta-98773
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
90 9 B 19.0 241.0
93 13 C 26.2 214.5
95 5 B 21.7 177.6
96 2 A -27.6 153.8
4 29