Sunspot drawing of 1990-9-17

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https://doi.org/10.7891/e-manuscripta-145198



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1990-09-17
08:30
Hs 1304.6:2963
https://doi.org/10.7891/e-manuscripta-145198
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
507 9 10 C -10 173
511 2 2 A -18 203
515 1 3 J 9 151
516 25 24 C -13 142
517 13 21 D 22 136
518 7 7 C -26 145
520 2 3 A 11 219
522 3 7 C 19 118
527 1 1 A -18 125
528 14 15 H -13 104
531 2 2 A -24 96
532 1 2 A -31 168
533 3 3 A -21 116
13 83 100