\begin{table} %T4
\par
             \caption{\label{table4}Comparison of lifetimes for levels of Fe X.}     
                                  %\centerline
{      
                           \begin{tabular}{lrl}                        
           \hline                                                                                 
      \hline                                                                                 
  Level & Present results & Experimental  \\                                    
\hline \noalign{\smallskip}        
3s$^2$3p$^5$ $^2$P$^\circ_{1/2}$          
& 14.51 ms  & 13.64$\pm$0.25$^a$, 14.41$\pm$0.14$^b$ \\					
3s3p$^6$ $^2$S$_{1/2}$                & 234.0 ps  & 270$\pm$20$^c$ \\		
3s$^2$3p$^4$($^3$P)3d $^4$F$_{9/2}$   & 77.27 ms  & 85.7$\pm$9.2$^d$, 110$\pm$5$^e$ \\  	
3s$^2$3p$^4$($^3$P)3d $^4$F$_{7/2}$   & 56.47 ms  & 93$\pm$30$^d$, 58$\pm$10$^f$ \\	
3s$^2$3p$^4$($^3$P)3d $^2$F$_{7/2}$   & 13.69 ms  & 16.0$\pm$1.6$^f$ \\%, 
%17.0$\pm$1.7$^e$ \\
3s$^2$3p$^4$($^1$D)3d $^2$F$_{7/2}$   & 4.56  ms  & 4.6$\pm$0.4$^f$ \\
%, 4.9$\pm$0.4$6x$ \\ 			     
3s$^2$3p$^4$($^1$D)3d $^2$G$_{9/2}$   & 12.86 ms  & 17.8$\pm$3.1$^d$ \\ 	
\hline                                                                                                                                                          
\end{tabular}}
\par
\medskip
$^a$: Moehs et~al. (\cite{Moehs01}). \\
$^b$: Tr{\" {a}}bert et~al. (\cite{Trabert04}).  \\
$^c$: Tr{\" {a}}bert (\cite{Trabert96}).  \\
$^d$: Moehs et~al. (\cite{Moehs00}).  \\
$^e$: Tr{\" {a}}bert et~al. (\cite{Trabert03}).  \\
$^f$: Tr{\" {a}}bert et~al. (\cite{Trabert02}).  \\
\end{table}