\begin{table}%t3
\caption{\label{tab3}IUE spectrum of NGC~2792.}  
%\centerline
{\begin{tabular}{llccc}
\hline
\hline
\multicolumn{1}{c}{$\lambda$} & Ion &\multicolumn{3}{c}{Intensities}\\
\cline{3-5}
\multicolumn{1}{c}{(\AA)}& & (1) & (2) &  ($I$/H$\beta$)   \\
\hline
1400 & \ion{O}{iv}  &  2.47  & 3.69 & 119 \\
1485 & \ion{N}{iv}] &  1.89  & 2.44  & 79 \\
1523 &              &  1.25  & 1.60  &  52 \\
1548 & \ion{C}{iv}  &  7.0  & 8.97  & 290  \\
1640 & \ion{He}{ii}  & 18.1   & 21.8  & 704  \\
1663 & \ion{O}{iii}] & 1.83   & 2.13 & 69 \\
1750 & \ion{N}{iii}] & 1.74  &  1.86 & 60 \\
1887 & \ion{Si}{iii}] & 0.40  &  0.46 & 15: \\
1909 & \ion{C}{iii}] & 13.3    & 16.1  & 520  \\
2089 &              & 0.75    &  2.51   & 81  \\
2423 & \ion{[Ne}{iv}] & 5.13   & 8.84  & 274  \\
2456 &              &  0.61  & 1.00 & 32 \\
2733 & \ion{He}{ii}  & 1.09  &  0.86 & 26.8  \\
2831 & [\ion{Fe}{iv}]?  & 1.02 & 0.71 & 22  \\
3043/47 & \ion{O}{iii}  &1.6      & 0.93       & 29      \\
3133 & \ion{O}{iii}  & 7.6      &   4.35    &  135     \\
3203  & \ion{He}{ii}  & 2.55  &  1.19 &  37.0 \\
\hline 
\end{tabular}}
\medskip
(1) Measured intensity from in units of 10$^{-13}$~erg~cm$^{-2}$~s$^{-1}$. \\
(2) Intensity corrected for diaphragm size and extinction in units of
10$^{-11}$~erg~cm$^{-2}$~s$^{-1}$. 
$I$/H$\beta$ is normalized to ${\rm H}\beta=100$. 
``:'' Indicates uncertain value
\end{table}