Sunspot drawing of 1990-12-21

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https://doi.org/10.7891/e-manuscripta-145386



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1990-12-21
09:30
Hs 1304.6:3039
https://doi.org/10.7891/e-manuscripta-145386
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
683 2 5 C 3 52
685 10 17 H 19 25
686 45 48 D 15 15
687 3 3 A -6 5
688 14 16 D 12 34
690 1 2 A 18 294
692 6 7 C 18 353
693 2 2 A 29 338
694 10 25 D -23 253
9 93 125