Sunspot drawing of 1957-12-18

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https://doi.org/10.7891/e-manuscripta-87930



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1957-12-18
10:30
Hs 1304.5:295
https://doi.org/10.7891/e-manuscripta-87930
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
775 7 10 B -21.5 2.1
777 25 31 C -12.8 6.9
780 20 42 D -15.4 327.9
781 130 130 E 17.6 313.6
783 1 2 A 12.4 40.9
786 11 21 C -23.7 340.9
787 31 42 F 22.5 296.3
788 1 1 A 24.9 357.8
789 19 22 C 16.0 278.6
790 11 14 B -12.3 318.3
791 7 17 D 12.3 15.5
794 17 22 F -24.0 263.4
795 1 2 A 9.8 310.0
796 1 1 A 28.9 272.8
797 1 3 J -13.5 267.3
798 5 6 C 24.1 258.8
16 288 366