Sunspot drawing of 1990-2-17

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https://doi.org/10.7891/e-manuscripta-145091



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1990-02-17
08:30
Hs 1304.6:2767
https://doi.org/10.7891/e-manuscripta-145091
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
83 4 14 H 20 109
84 5 8 C 12 139
86 3 4 B -14 92
89 3 3 A 14 34
90 3 3 A -12 45
91 3 5 J 10 66
92 1 3 J -10 347
7 22 40