\begin{table}%t1
%\centering
\par
\caption{{{Observed lines. Asterisks denote ions observed
by Peter \& Judge (\cite{peter}) or Teriaca et~al. (\cite{teriaca}). 
Temperatures at peak of the ion's relative abundance $T_{\rm e}$ follow 
Landini \& Monsignori Fossi (\cite{landini}).}}}\label{tab1}
\begin{tabular}{lrclrc}                         \hline\hline
\multicolumn{2}{l}{Line (\AA)} & log ($T_{\rm e}$/K)
&\multicolumn{2}{l}{Line (\AA)}& log ($T_{\rm e}$/K)\\ \hline 
\mgix~        & 368.1 &  6.00     &   \oxi$^{\ast}$  & 1152.1 &  4.18 \\
\hei$^{\ast}$  & 584.3 &  4.50     &   \ion{C}{iii}$^{\ast}$   & 1175.7 &  4.80 \\
\oxv$^{\ast}$  & 629.7 &  5.39     &   \ci$^{\ast}$   & 1267.7 &  4.18 \\
\niii~        & 764.4 &  4.90     &   \oxi$^{\ast}$  & 1302.2 &  4.18 \\
\niv~         & 765.2 &  5.20     &   \oxi$^{\ast}$  & 1304.9 &  4.18 \\ 
\nehuit{}$^{\ast}$  & 770.4 &  5.81     &   \siii$^{\ast}$ & 1309.3 &  4.10 \\ 
\svi$^{\ast}$  & 933.4 &  5.28     &   \cii$^{\ast}$  & 1334.5 &  4.60 \\
\oxvi$^{\ast}$ &1031.9 &  5.47     &                  &       
\\ \hline
\end{tabular}
\end{table}