Sunspot drawing of 1990-11-20

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https://doi.org/10.7891/e-manuscripta-145268



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1990-11-20
08:30
Hs 1304.6:3015
https://doi.org/10.7891/e-manuscripta-145268
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
638 97 105 F 18 25
639A 3 3 A 16 69
640 3 5 J -18 347
643 12 12 B -17 45
4 115 125