Sunspot drawing of 2010-4-1

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https://doi.org/10.7891/e-manuscripta-156437



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2010-04-01
15:30
Hs 1304.6:8977
https://doi.org/10.7891/e-manuscripta-156437
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
20 2 5 J 15.5 319.0
21 2 4 J -22.0 264.3
2 4 9