Sunspot drawing of 1969-12-12

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https://doi.org/10.7891/e-manuscripta-95878



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1969-12-12
08:30
Hs 1304.5:4027
https://doi.org/10.7891/e-manuscripta-95878
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
499 5 J 17.1 222.0
503 3 A -19.8 227.5
505 2 C -10.4 107.8
506 20 D -12.5 86.6
507 5 C 4.2 91.4
5 35