Sunspot drawing of 2007-2-21

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https://doi.org/10.7891/e-manuscripta-154273



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2007-02-21
10:00
Hs 1304.6:8012
https://doi.org/10.7891/e-manuscripta-154273
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
9 2 2 A -11.5 132.8
1 2 2