Sunspot drawing of 1990-12-13

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https://doi.org/10.7891/e-manuscripta-145352



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1990-12-13
09:30
Hs 1304.6:3031
https://doi.org/10.7891/e-manuscripta-145352
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
668 1 3 J 12 163
670 6 6 B 18 151
671 13 15 C 9 145
678 1 3 J -19 140
681 2 4 B -24 61
682 1 3 J 28 55
683 24 30 C 4 51
684 1 3 J 9 36
685 6 13 G 19 30
686 14 17 D 16 16
10 69 97