Sunspot drawing of 1990-7-31

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https://doi.org/10.7891/e-manuscripta-145224



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1990-07-31
07:00
Hs 1304.6:2915
https://doi.org/10.7891/e-manuscripta-145224
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
392 4 4 B -20 117
398 2 5 J -12 104
400 7 3 B 10 93
402 18 18 B -23 81
403 5 8 C -11 78
404 12 8 B -20 69
406 2 4 J 16 45
409 11 10 C 19 34
410 3 2 A -8 48
411A 7 8 J -7 35
412 7 15 D 24 337
413 2 6 H 16 333
414 1 3 J -6 342
13 81 94