\begin{table}%t7
\caption{Comparison of the median $I_{\rm th}/I_{\rm obs}$ 
           between NIS-1
           and \mbox{NIS-2}~lines for the ions \ion{O}{iii}, \ion{Ne}{iv}, 
           and~\ion{Ne}{v}.}
\label{table:NIS-1-2_comparison}
%\centering
\par
\begin{tabular}{lrr}
\hline  \hline
              & \multicolumn{2}{c}{MEDIAN $I_{\rm th}/I_{\rm obs}$} \\
Ion           & NIS-1 & NIS-2 \\
\hline
\ion{O}{iii}  & 0.2   & 0.9   \\
\ion{Ne}{iv}  & 0.6   & 1.2   \\
\ion{Ne}{v}   & 0.9   & 1.6   \\
\hline
\end{tabular}
\end{table}