\begin{table}%t1
  \caption{\label{tab1}IRS spectrum of \object{NGC~2792}.} 
\small
%\centerline
{\begin{tabular}{lrcc}
\hline
\hline
Identification &  $\lambda$($\mu$m) & Intensity$^{\dagger}$ & $I$/H$\beta$ \\
\hline
\ion{[Mg}{v}] & 5.606  &  332 $\pm$ 21  &11.5 \\
\ion{H}{i} (6-5) & 7.478 & 89 $\pm$ 14  & 3.05    \\
\ion{[Ar}{v}]   & 7.904  & 171 $\pm$ 8  & 5.9 \\
\ion{[Ar}{iii}] & 8.997 & 231 $\pm$ 7 & 7.9 \\
\ion{[S}{iv}] & 10.510 & 3140 $\pm$ 50  & 108 \\
\ion{H}{i}(9-7) & 11.304  & 9.62: $\pm$ 1.2 & 0.33  \\
\ion{[Cl}{iv}] & 11.763 & 26.1 $\pm$ 4.0 & 0.894 \\
\ion{H}{i} (7-6+11-8) & 12.371 & 25.6: $\pm$ 3.8 & 0.877 \\
\ion{[Ne}{ii}] & 12.811 & 28.8 $\pm$ 1.0  & 0.986 \\
\ion{[Ar}{v}] & 13.099 & 206 $\pm$ 5 & 7.07  \\
\ion{[Mg}{v}] & 13.518 & 19.4: $\pm$ 1.2  & 0.664: \\
\ion{[Ne}{v}] & 14.320 & 2700 $\pm$ 90 & 92.6 \\
\ion{[Fe}{vi}] & 14.785 & 7.8: $\pm$ 1.1 & 0.27: \\
\ion{[Ne}{iii}] & 15.553 & 1370 $\pm$ 70 & 46.9 \\
\ion{[S}{iii}] & 18.712 & 306 $\pm$ 9  & 10.5 \\
\ion{[Cl}{iv}] & 20.312 & 21.5: $\pm$ 0.5  & 0.74: \\
\ion{[Ar}{iii}] & 21.819 & 11.7: $\pm$ 1.1 & 0.40: \\
\ion{[Ne}{v}]   & 24.319 & 1860 $\pm$ 15  & 63.7 \\
\ion{[O}{iv}] & 25.887 & 8690  $\pm$  940  & 298 \\
\ion{[S}{iii}] & 33.477 & 149  $\pm$  7  & 5.11 \\
\ion{[Si}{ii}] & 34.818 & 8.0: $\pm$ 1.2 & 0.275: \\
\ion{[Ne}{iii}] & 36.008 & 106 $\pm$ 4 & 3.63 \\ 
\hline
\end{tabular}}
\smallskip
$^{\dagger}$ Intensities measured in units of 10$^{-14}$~erg~cm$^{-2}$~s$^{-1}$. The intensities below 19~$\mu$m have been increased by a factor of 2.65 and those by a factor of 5.5 to bring them all to the same scale (see text).
\\ 
(:) Indicates an uncertain value.
\\
Note: The measured line intensity is given in Col.~3. The last column gives the ratio of the line  intensity to H$\beta$(=100).
\end{table}