Sunspot drawing of 1990-12-20

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https://doi.org/10.7891/e-manuscripta-145220



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1990-12-20
09:00
Hs 1304.6:3038
https://doi.org/10.7891/e-manuscripta-145220
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
683 8 11 C 3 50
685 13 18 H 19 25
686 39 40 D 17 15
687 5 6 B -6 8
688 17 19 D 13 35
690 1 3 J 18 293
691 1 2 A -15 346
692 1 1 A 18 355
8 85 100