Sunspot drawing of 1990-2-20

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https://doi.org/10.7891/e-manuscripta-145282



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1990-02-20
08:30
Hs 1304.6:2770
https://doi.org/10.7891/e-manuscripta-145282
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
83 1 6 H 20 109
90 3 2 B -10 41
92 1 3 J -10 347
93 2 3 B 18 98
98 28 28 D -36 337
99 1 3 A -13 340
100 2 4 J -12 328
102 5 12 D 3 11
103 2 2 A -12 8
104 14 27 D -17 317
105 2 2 A 25 35
106 4 9 D 14 312
107 3 7 C 17 310
13 68 108