Sunspot drawing of 1990-12-23

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https://doi.org/10.7891/e-manuscripta-145237



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1990-12-23
09:00
Hs 1304.6:3041
https://doi.org/10.7891/e-manuscripta-145237
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
685 4 8 H 18 25
686 21 28 D 15 16
690 8 7 B 17 292
692 4 3 B 18 354
694 26 30 E -23 256
695 5 9 C -19 241
696 1 2 A -14 245
7 69 87