\begin{table}%t4
%Table 4\\
\caption{ISO observations of \object{NGC~6153}
(in units of 10$^{-13}$~erg~cm$^{-2}$~s$^{-1}$).} \label{t4}
%\centerline
{\begin{tabular}{lrcc}
\hline
\hline
Ident. &  $\lambda$($\mu$m) & Intens.(1) & Intens.(2) \\
\hline
\ion{H}{i} Br$\beta$ & 2.625  & 55.2     & 127  \\
\ion{He}{ii} 7-6     & 3.091  & 8.5      & 19  \\ 
\ion{H}{i} Br$\alpha$& 4.053  & 78.3     & 180 \\ 
\ion{[Ar}{ii]}       & 6.983  & 106      & 244  \\ 
\ion{[Na}{iii]}      & 7.321  & 16.5     & 38  \\
\ion{[Ar}{iii]}      & 8.994  & 499      & 1148  \\ 
\ion{[S}{iv]}        & 10.511 & 2490     & 5730  \\
\ion{[Cl}{iv]}       & 11.756 & 38:      & 87: \\
\ion{[Ne}{ii]}       & 12.818 & 124      & 248  \\
\ion{[Ne}{iii]}      & 15.556 & 3340     & 6680  \\ 
\ion{[S}{iii]}       & 18.712 & 928      & 1856  \\  
\ion{[Ar}{ii]}       & 21.836 & 15:      & 30: \\
\ion{[Fe}{iii]}      & 22.94  & 4.5      & 9  \\
\ion{[O}{iv]}        & 25.901 & 1046     & 2090 \\
\ion{[S}{iii]}       & 33.487 & 413      & 516  \\
\ion{[Si}{ii]}       & 34.815 & 48.4     & 60.5 \\
\ion{[Ne}{iii]}      & 36.012 & 666      & 832  \\
\ion{[O}{iii]}$^{*}$ & 52     & 5400     & 5400 \\
\ion{[N}{iii]}$^{*}$ & 57     & 1550     & 1500 \\
\ion{[O}{iii]}$^{*}$ & 88     & 1580     & 1580 \\
\ion{[N}{ii]}$^{*}$  & 122    & $\leq$4  & $\leq$4 \\
\hline
\end{tabular}}
Intens.(1) are measured values; Intens.(2) are intensities corrected for the diaphragm size (see text).
\par
$^{*}$ These data are from Liu et~al. (\cite{liu}).
\end{table}