\begin{table}%t5
%\centering
\par
\caption{The parameter values used for the escape
 probability calculation of the
 \cii~\element[][2][][3/2]{P}$-$\element[][2][][1/2]{P}
 emissivity from the CNM and WNM. Powers of ten are
 given in parentheses.} 
\label{t_escprob}
%\centering
\par
\begin{tabular}{lr}
\hline \hline 
Quantity & Value \\
\hline 
$\beta$ & 1 \\
$g_{\rm u}$ & 4/3 \\
$g_{\rm l}$ & 2/3 \\
$A_{\rm ul}$ [\ps] & $2.4~(-6)$ \\
$n_{\rm cr}$ [\pcc] & $4~(3)$ \\
$n_{\rm cr,e}$ [\pcc] & $4~(1)$ \\
%k$_{\rm B}$ & erg K$^{-1}$ & $1.38065~(-16)$ \\
\hline
\end{tabular}
\end{table}