Sunspot drawing of 1991-9-18

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https://doi.org/10.7891/e-manuscripta-145775



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1991-09-18
07:15
Hs 1304.6:3272
https://doi.org/10.7891/e-manuscripta-145775
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
496 12 9 B -21 30
500 2 3 J -11 13
503 4 5 J 2 358
504 44 40 D 8 344
505 8 6 B -13 355
510 4 3 B 13 352
511 4 3 B 8 329
512 2 3 B 9 302
513 1 1 A 7 292
514 1 2 A 18 276
10 82 75