\begin{table}%t2
\caption{Comparison between the Be-like \ion{Mg}{ix}~(368.057~\AA) and the Li-like 
           \ion{Mg}{x}~(624.95~\AA) transitions in the selected segments.}
\label{table:Mgix-x_comparison}
%\centering
\par
\begin{tabular}{llccccl}
\hline \hline
 &    &  \multicolumn{2}{c}{Li-like}                    & \multicolumn{2}{c}{Be-like}                      &  \\
 &    &  \multicolumn{2}{c}{\ion{Mg}{x}~(624.95~\AA)} & \multicolumn{2}{c}{\ion{Mg}{ix}~(368.057~\AA)} & \\
Regions & segment & $I_{\rm th}/I_{\rm obs}$ & $(\sigma_0 \chi_i)^2$ & $I_{\rm th}/I_{\rm obs}$ & $(\sigma_0 \chi_i)^2$ & note \\
\hline
Extended brightening & 1(0)  & 1.1 & 1.3($-$1) & 0.5  & 3.4     & \\
                     & 2(1)  & 0.6 & 1.8     & 0.2  & 7.2     & high velocities \\
\\
Narrow brightening   & 3(4)  & 0.7 & 1.3     & 0.4  & 4.8     & low intensities \\
                     & 5(7U) & 1.9 & 8.2     & 0.8  & 2.8(-1) & \\
                     & 7(8U) & 1.1 & 7.1($-$1) & 0.5  & 3.3     & \\
                     & 8(9)  & 2.5 & 2.5(+1) & 1.0  & 1.4(-2) & \\
\\
Dark regions         & 4(7L) & 0.5 & 2.3     & 0.3  & 6.4     & high velocities \\
                     & 6(8L) & 1.0 & 1.2($-$4) & 0.5  & 4.8     & high velocities \\
\hline
\end{tabular}
\end{table}