\begin{table}%T1
%\centering
\par
\caption{Properties of the CDS observation.}\label{tabObs}
\begin{tabular}{ll}
\hline\hline
Slit width & $2 \times 240$~arcsec \\
Exposure time & 10 s \\
Number of spectral windows & 12 \\
Size of the spectral window& 0.066--0.112~\AA \\
Spatial pixel size & $2 \times 1.7$~arcsec \\
Raster $x$-size &  80 arcsec \\
Raster $y$-size & 118 arcsec \\
Duration of one raster &  13 min\\
Number of rasters & 14\\ 
Overall duration of the observations & 2 hours 53 min \\
\hline
\end{tabular}
\end{table}