Table 1: Summary of observed targets. $\mu=\cos(\theta)$ with $\theta $ the observing angle. e time is the effective exposure time per line position, i.e., the sum of all exposure times.
date NOAA number position [ $\hbox{$^\circ$ }$] $\mu$ e time
07-Jan-2006 AR10845 N18 E64 0.39 7.8
10-Jun-2006 AR10893 N01 E17 0.95 7.8
12-Sep-2006 AR10908 S09 W12 0.94 7.5
15-Sep-2006 AR10908 S13 W51 0.58 7.7


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