Sunspot drawing of 1991-9-20

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https://doi.org/10.7891/e-manuscripta-145939



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1991-09-20
09:00
Hs 1304.6:3274
https://doi.org/10.7891/e-manuscripta-145939
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
500 1 3 J -11 14
503 1 3 J 2 360
504 42 35 C 8 346
511 5 3 B 8 332
515 2 2 A 7 26
516 7 6 B -13 341
517 1 1 A -11 253
7 59 53