\begin{table}%t3
   %\centering
\par
    \caption{\label{tab:avalues}Comparisons of selected radiative rates for transitions in 
             Ar$^{2+}$.}
\par
    \begin{tabular}{cclll}
    \hline\hline
    Initial -- Final & In. -- Fi. & NIST Ajk & 
    Mendoza \& & Present Ajk \\
    Configurations&Levels&   & Zeippen  &  \\
    &  & & (\cite{mendoza_83}) & \\
    \hline\noalign{\smallskip}
    3s3p$^5$ $\rightarrow$ 3s$^2$3p$^4$    & $^3$P$_1$ $\rightarrow$ 
    $^3$P$_2$  &$1.59\times 10^{8}$  &                     & 
    $1.16\times 10^{8}$ \\   
    3s3p$^5$ $\rightarrow$ 3s$^2$3p$^4$    & $^3$P$_0$ $\rightarrow$ 
    $^3$P$_1$  &$3.74\times 10^{8}$  &                     & 
    $2.78\times 10^{8}$ \\   
    3s3p$^5$ $\rightarrow$ 3s$^2$3p$^4$    & $^3$P$_2$ $\rightarrow$ 
    $^3$P$_2$  &$2.79\times 10^{8}$  &                     & 
    $2.08\times 10^{8}$ \\   
    3s3p$^5$ $\rightarrow$ 3s$^2$3p$^4$    & $^3$P$_1$ $\rightarrow$ 
    $^3$P$_1$  &$9.20\times 10^{7}$  &                     & 
    $6.95\times 10^{7}$ \\   
    3s3p$^5$ $\rightarrow$ 3s$^2$3p$^4$    & $^3$P$_1$ $\rightarrow$ 
    $^3$P$_0$  &$1.22\times 10^{8}$  &                     & 
    $9.21\times 10^{7}$ \\   
    3s3p$^5$ $\rightarrow$ 3s$^2$3p$^4$    & $^3$P$_2$ $\rightarrow$ 
    $^3$P$_1$  &$9.00\times 10^{7}$  &                     & 
    $6.90\times 10^{7}$ \\   
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^1$S$_0$ $\rightarrow$ 
    $^1$D$_2$  &$9.50\times 10^{-1}$ &$2.59\times 10^{0}$  & 
    $2.59\times 10^{0}$ \\  
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^1$D$_2$ $\rightarrow$ 
    $^3$P$_2$  &$3.48\times 10^{-1}$ &$3.14\times 10^{-1}$ & 
    $1.13\times 10^{-1}$ \\  
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^1$D$_2$ $\rightarrow$ 
    $^3$P$_1$  &$9.64\times 10^{-2}$ &$8.23\times 10^{-2}$ & 
    $8.22\times 10^{-2}$ \\	   
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^1$D$_2$ $\rightarrow$ 
    $^3$P$_0$  &$1.25\times 10^{-4}$ &$2.21\times 10^{-5}$ & 
    $2.21\times 10^{-5}$ \\	   
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^1$S$_0$ $\rightarrow$ 
    $^3$P$_2$  &$4.30\times 10^{-2}$ &$4.17\times 10^{-2}$ & 
    $4.17\times 10^{-2}$ \\  
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^1$S$_0$ $\rightarrow$ 
    $^3$P$_1$  &$4.02\times 10^{0}$  &$3.91\times 10^{0}$  & 
    $3.91\times 10^{0}$  \\	   
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^3$P$_0$ $\rightarrow$ 
    $^3$P$_2$  &$2.72\times 10^{-6}$ &$2.37\times 10^{-6}$ & 
    $2.37\times 10^{-6}$ \\	
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^3$P$_1$ $\rightarrow$ 
    $^3$P$_2$  &$3.10\times 10^{-2}$ &$3.08\times 10^{-2}$ & 
    $3.08\times 10^{-2}$ \\	
    3s$^2$3p$^4$ $\rightarrow$ 3s$^2$3p$^4$ & $^3$P$_0$ $\rightarrow$ 
    $^3$P$_1$  &$5.19\times 10^{-3}$ &$5.17\times 10^{-3}$ & 
    $5.17\times 10^{-3}$ \\	
    3p$^3$4p $\rightarrow$ 3p$^3$4s  & $^5$P$_3$ 
    $\rightarrow$ $^5$S$_2$   &$2.00\times 10^{8}$  
    &                      & $4.61\times 10^{8}$ \\   
    3p$^3$4p $\rightarrow$ 3p$^3$4s  & $^5$P$_2$ 
    $\rightarrow$ $^5$S$_2$   &$2.00\times 10^{8}$  
    &                      & $4.60\times 10^{8}$ \\   
    3p$^3$4p $\rightarrow$ 3p$^3$4s  & $^5$P$_1$ 
    $\rightarrow$ $^5$S$_2$   &$2.00\times 10^{8}$  
    &                      & $4.60\times 10^{8}$ \\   
    3p$^3$4p $\rightarrow$ 3p$^3$4s  & $^3$F$_4$ 
    $\rightarrow$ $^3$D$_3$   &$2.00\times 10^{8}$  
    &                      & $3.83\times 10^{8}$ \\   
    3p$^3$4p $\rightarrow$ 3p$^3$4s  & $^3$F$_3$ 
    $\rightarrow$ $^3$D$_2$   &$1.80\times 10^{8}$  
    &                      & $3.75\times 10^{8}$ \\   
    3p$^3$4p $\rightarrow$ 3p$^3$4s  & $^3$F$_2$ 
    $\rightarrow$ $^3$D$_1$   &$1.60\times 10^{8}$  
    &                      & $3.56\times 10^{8}$ \\   
    \hline
    \end{tabular}
   \end{table}