Sunspot drawing of 1991-10-20

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https://doi.org/10.7891/e-manuscripta-145776



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1991-10-20
09:15
Hs 1304.6:3294
https://doi.org/10.7891/e-manuscripta-145776
Observer : Andrea Manna
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
552 3 7 H -20 10
554 3 5 C 17 5
560 1 3 J -3 344
561A 1 3 J -17 329
563 10 25 D 22 296
566 2 4 J -13 308
6 20 47