Sunspot drawing of 1990-9-20

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https://doi.org/10.7891/e-manuscripta-145162



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1990-09-20
07:00
Hs 1304.6:2966
https://doi.org/10.7891/e-manuscripta-145162
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
507 1 4 J -11 176
515 1 4 J 10 151
516 6 10 J -13 147
517 4 5 B 22 134
518 6 10 B -26 142
522 7 10 C 20 117
526 4 6 B 15 152
528 4 15 H -13 104
534 10 17 D -9 80
535 2 5 J -24 56
537 2 8 G 13 27
538 4 6 C 6 32
12 51 100