Sunspot drawing of 1998-4-28

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https://doi.org/10.7891/e-manuscripta-150072



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1998-04-28
12:30
Hs 1304.6:5292
https://doi.org/10.7891/e-manuscripta-150072
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
80 12 20 C -17 138
81 3 5 C -30 234
82 2 3 A -24 115
3 17 28