\begin{table}%T1
\caption{Emission lines used in the present analysis. Transitions
  within 0.4~\AA\ are blended in the CDS spectra. Wavelengths are from
  v4.2 of the CHIANTI database.}
\label{tbl.lines}
%\centering
\par
\begin{tabular}{lll}
\hline
\hline
\noalign{\smallskip}
Ion &Transition &$\lambda$/\AA  \\
\hline
\noalign{\smallskip}
\ion{Mg}{v}&2s$^2$ 2p$^4$ $^3$P$_{2}$--2s 2p$^5$ $^3$P$_{2}$&353.09\\
&2s$^2$ 2p$^4$ $^3$P$_{1}$--2s 2p$^5$ $^3$P$_{1}$&353.30\\
\noalign{\smallskip}
\ion{Mg}{vi}&2s$^2$ 2p$^3$ $^2$D$_{5/2}$--2s 2p$^4$ $^2$D$_{3/2}$&349.11\\
&2s$^2$ 2p$^3$ $^2$D$_{3/2}$--2s 2p$^4$ $^2$D$_{3/2}$&349.12\\
&2s$^2$ 2p$^3$ $^2$D$_{5/2}$--2s 2p$^4$ $^2$D$_{5/2}$&349.16\\
&2s$^2$ 2p$^3$ $^2$D$_{3/2}$--2s 2p$^4$ $^2$D$_{5/2}$&349.18\\
\noalign{\smallskip}
\ion{Mg}{vii}&2s$^2$ 2p$^2$ $^3$P$_{2}$--2s 2p$^3$ $^3$P$_{2}$&367.66\\
&2s$^2$ 2p$^2$ $^3$P$_{2}$--2s 2p$^3$ $^3$P$_{1}$&367.67\\
\noalign{\smallskip}
\ion{Mg}{viii}&2s$^2$ 2p $^2$P$_{3/2}$--2s 2p$^2$ $^2$P$_{3/2}$&315.02\\
\noalign{\smallskip}
\ion{Ne}{iv}&2s$^2$ 2p$^3$ $^4$S$_{3/2}$--2s 2p$^4$ $^4$P$_{5/2}$&543.89\\
\noalign{\smallskip}
\ion{Ne}{v}&2s$^2$ 2p$^2$ $^3$P$_{2}$--2s 2p$^3$ $^3$D$_{1}$&572.03\\
\noalign{\smallskip}
\ion{Ne}{vi}&2s$^2$ 2p $^2$P$_{3/2}$--2s 2p$^2$ $^2$D$_{3/2}$&562.70\\
&2s$^2$ 2p $^2$P$_{3/2}$--2s 2p$^2$ $^2$D$_{5/2}$&562.80\\
\noalign{\smallskip}
\ion{Ne}{vii}&2s 2p $^3$P$_{1}$--2p$^2$ $^3$P$_{1}$&561.38\\
&2s 2p $^3$P$_{2}$--2p$^2$ $^3$P$_{2}$&561.73\\
\noalign{\smallskip}
\ion{Si}{ix}&2s$^2$ 2p$^2$ $^3$P$_{1}$--2s 2p$^3$ $^3$D$_{1}$&344.95\\
&2s$^2$ 2p$^2$ $^3$P$_{1}$--2s 2p$^3$ $^3$D$_{2}$&345.12\\
&2s$^2$ 2p$^2$ $^3$P$_{2}$--2s 2p$^3$ $^3$D$_{1}$&349.62\\
&2s$^2$ 2p$^2$ $^3$P$_{2}$--2s 2p$^3$ $^3$D$_{2}$&349.79\\
&2s$^2$ 2p$^2$ $^3$P$_{2}$--2s 2p$^3$ $^3$D$_{3}$&349.86\\
\noalign{\smallskip}
\ion{Mg}{ix}&2s$^2$ $^1$S$_{0}$--2s 2p $^1$P$_{1}$&368.07\\
\noalign{\smallskip}
\ion{Mg}{x}& 2s $^2$S$_{1/2}$--2p $^2$P$_{1/2}$&624.94\\
\noalign{\smallskip}
\ion{Si}{xii}& 2s $^2$S$_{1/2}$--2p $^2$P$_{1/2}$&520.67\\
\hline
\end{tabular}
\end{table}