Sunspot drawing of 2007-4-30

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https://doi.org/10.7891/e-manuscripta-154238



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2007-04-30
07:15
Hs 1304.6:8075
https://doi.org/10.7891/e-manuscripta-154238
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 8 12 C -10.6 308.6
19 4 4 B -5.4 289.5
2 12 16