Sunspot drawing of 1997-10-18

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https://doi.org/10.7891/e-manuscripta-149555



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1997-10-18
08:00
Hs 1304.6:5137
https://doi.org/10.7891/e-manuscripta-149555
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 7 11 D 31 255
93 7 9 C 13 170
94 3 5 C 16 137
3 17 25