Sunspot drawing of 1997-10-17

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https://doi.org/10.7891/e-manuscripta-149562



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1997-10-17
08:00
Hs 1304.6:5136
https://doi.org/10.7891/e-manuscripta-149562
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 11 18 D 31 255
93 16 17 C 13 171
94 4 7 C 16 137
3 31 42