Sunspot drawing of 1991-9-17

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https://doi.org/10.7891/e-manuscripta-145849



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1991-09-17
07:15
Hs 1304.6:3271
https://doi.org/10.7891/e-manuscripta-145849
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
494 8 10 B -21 48
496 14 13 C -22 30
498 4 2 B -16 26
499 2 1 A 13 64
500 5 5 J -11 14
503 8 11 C 1 359
504 33 30 D 7 344
505 10 7 B -13 1
507 4 3 B 8 1
509 1 1 A -8 59
10 89 83