Sunspot drawing of 1998-1-20

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https://doi.org/10.7891/e-manuscripta-150073



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1998-01-20
13:00
Hs 1304.6:5206
https://doi.org/10.7891/e-manuscripta-150073
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
6 2 5 J -18 42
11 1 2 A 25 347
2 3 7