Sunspot drawing of 1977-8-13

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https://doi.org/10.7891/e-manuscripta-98788



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1977-08-13
07:30
Hs 1304.5:6368
https://doi.org/10.7891/e-manuscripta-98788
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
87 5 C 23.8 325.7
90 2 A 19.1 242.6
91 4 A 30.2 214.6
92 2 A 34.3 221.5
93 7 B 26.3 212.4
94 3 J 18.5 191.0
6 23