\begin{table}%t2
\caption{\label{tab2}Visual spectrum of NGC~2792.}
%\centerline
{
\begin{tabular}{llccccc}
\hline
\hline
\multicolumn{1}{c}{$\lambda$} & Ion & \multicolumn{4}{c}{Intensities$^{\dagger}$}& Average\\ \cline{3-6}
\multicolumn{1}{c}{(\AA)}& & (1) & (2)& (3) & (4) & Intens.\\
\hline
3426 & \ion{[Ne}{v}]  &        &      &  68:   &  130:& 68  \\
3727$^{\ast}$   & \ion{[O}{ii}] & 7.4: &     & 14:  & 12 & 9 \\
3869 & \ion{[Ne}{iii}] & 67.8 &     & 68  & 63.1 &  67.8 \\
%4101 & \ion{H$\delta$}& 26.6 & 27.0 & 25.8 &     \\
4267 & \ion{C}{ii}    & 0.1:   &      &       &   & 0.1:   \\
%4340 & \ion{H$\gamma$}& 47.4 & 46.8 & 44.6 &     \\
4363 & \ion{[O}{iii}] & 17.0 & 14.3   &  20  & 12.2 &  16 \\
%4471 & \ion{He}{i}    & 4.12 & 3.52 & 3.56 & 3.7 \\
4686 & \ion{He}{ii}  & 97.0 & 101.3 & 91  & 100.4 & 98 \\
4711 & \ion{[Ar}{iv}] & 9.7  &      &      & 8.73 & 9.2  \\
4740 & \ion{[Ar}{iv}] & 8.5    &      &      & 7.94 & 8.1  \\
4861 & H$\beta$ & 100 & 100 & 100 & 100 & 100 \\
5007 & \ion{[O}{iii}] & 960 & 1030 & 1150 & 1050 & 1050 \\
5517 & \ion{[Cl}{iii}] & 0.5 &      &    &    & 0.5:   \\
5538 & \ion{[Cl}{iii}] & 0.5 &      &      &   & 0.5: \\
5755 & \ion{[N}{ii}]  & 0.1:  &  1.0  &     &    & 0.4::   \\
5876 & \ion{He}{i}    & 3.0   & 3.3 & 4.0:  & 3.08 & 3.2 \\
6312 & \ion{[S}{iii}] & 1.8  & 1.8   &      &     & 1.8 \\
%6563 & \ion{H$\alpha$}& 285  &       & 282  &      \\
6584 & \ion{[N}{ii}]  & 3.5:  & 10.4  & 4.4:   & 5.26 & 4.4 \\
6717 & \ion{[S}{ii}]  & 0.4 &      &      &     & 0.4:  \\
6731 & \ion{[S}{ii}]  & 0.7 &      &      &     & 0.7:   \\
7005 & \ion{[Ar}{v}]   & 3.2:    &      &    &     & 3.2:   \\
7135 & \ion{[Ar}{iii}]& 9.3 &  8.2   & 10.7  &     & 9.6  \\
7263 & \ion{[Ar}{iv}]  & 0.4    &     &      &     & 0.4:   \\
8045 & \ion{[Cl}{iv}]  & 1.6    &   &      &      & 1.6    \\
%9532 & \ion{[S}{iii]}  &     &    &      &  21 \\
C(H$\beta$)    &        & 0.67 & 1.08  & 0.75  & 1.05 &   \\
\hline
\end{tabular}}
\smallskip
$^{\dagger}$ References; (1) Milingo et~al. (\cite{milingo1}), (2) de Freitas
Pacheco et~al. (\cite{dfp}), (3) Torres-Peimbert\& Peimbert (\cite{tpp}), (4)
Kingsburgh \& Barlow (\cite{kings}).\\ 
(:)  Indicates uncertain values.\\ 
$^{\ast}$ This is a blend of $\lambda$3726 and $\lambda$3729 lines. 
$C$ is the extinction used by the author.
\end{table}