Sunspot drawing of 1993-12-13

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https://doi.org/10.7891/e-manuscripta-147641



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1993-12-13
08:30
Hs 1304.6:3944
https://doi.org/10.7891/e-manuscripta-147641
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
279 2 3 J -20 87
281 1 3 J -11 90
2 3 6