Sunspot drawing of 1969-12-13

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https://doi.org/10.7891/e-manuscripta-95789



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1969-12-13
09:30
Hs 1304.5:4028
https://doi.org/10.7891/e-manuscripta-95789
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
499 3 J 17.6 220.6
505 4 B -10.4 108.1
506 23 D -12.1 88.3
507 3 J 5.5 89.6
508 1 A -3.0 169.6
509 1 A 17.6 76.8
510 1 A 14.5 88.0
511 9 J 13.4 77.6
8 45