Sunspot drawing of 1998-2-21

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https://doi.org/10.7891/e-manuscripta-150070



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1998-02-21
08:30
Hs 1304.6:5238
https://doi.org/10.7891/e-manuscripta-150070
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
26 6 11 C -25 32
34 2 2 B -33 274
2 8 13