Sunspot drawing of 1957-12-17

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https://doi.org/10.7891/e-manuscripta-87922



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1957-12-17
09:00
Hs 1304.5:294
https://doi.org/10.7891/e-manuscripta-87922
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
771 2 4 C 10.0 68.7
775 1 3 A -19.6 5.4
777 20 28 D -12.9 5.9
779 1 1 A 16.9 345.7
780 35 61 F -15.1 328.9
781 63 79 D 18.1 312.8
783 4 9 D 13.5 39.4
786 16 21 D -24.2 342.7
787 16 34 F 23.0 294.2
789 3 8 D 15.3 281.1
790 11 13 C -10.1 319.4
791 14 23 C 12.7 15.6
792 1 1 A 28.3 338.6
793 1 2 A -6.1 303.0
794 3 6 D -24.0 273.5
15 191 293