\begin{table}%t2 
\caption{\label{pah}Measured line luminosities of fine-structure lines and PAHs for NGC 2992.}       %\centerline
{\small                          
\begin{tabular}{l r r}        
\hline\hline                
Line & $\lambda$\tablefootmark{a} & luminosity\\      
     &($\mu$m)& (10$^{33}$ W)\\ 
\hline                       
PAH&6.2&$9.2\pm0.7$\\ 
PAH&11.2&$12.5\pm0.2$\\ 
$\left[\mbox{\ion{S}{iv}}\right]$&10.5&   $2.0\pm0.01$\\ 
$\left[\mbox{\ion{S}{iii}}\right]$&18.7&  $3.8\pm0.3$\\ 
$\left[\mbox{\ion{Ne}{ii}}\right]$&12.8&  $6.8\pm0.9$\\ 
$\left[\mbox{\ion{Ne}{iii}}\right]$&15.6& $7.1\pm0.4$\\ 
$\left[\mbox{\ion{Ne}{v}}\right]$&14.3&   $3.9\pm1.1$\\ 
$\left[\mbox{\ion{O}{iv}}\right]$&25.9&  $14.7\pm1.6$\\ 
\hline                             
\end{tabular}}
\tablefoot{\tablefoottext{a}{Wavelengths are in the rest frame.}}
\end{table}