Sunspot drawing of 1991-8-21

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https://doi.org/10.7891/e-manuscripta-145783



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1991-08-21
07:45
Hs 1304.6:3246
https://doi.org/10.7891/e-manuscripta-145783
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
437 2 3 J 23 47
438 5 7 J -9 50
440 20 16 D -10 28
441 35 31 D -20 28
442 46 50 D -16 30
443 20 16 D -20 46
444 55 43 C -10 13
445 3 4 J -3 5
446 14 11 C -16 360
447 8 8 C -26 357
448 23 20 C 10 358
449 19 17 C 2 357
452 37 30 D 10 339
453 3 4 J 2 342
454 16 15 C 17 342
456 4 3 B -9 327
457 1 2 A 13 309
458 5 3 A -3 355
18 316 283