\begin{table}%t2
%\centering
\par
\caption{Velocity exponents $\displaystyle \lambda^k(n l J \to n l J')~(J=J'~\textrm{and}~J\ne J')$ corresponding to the cross sections of Table \ref{table1}.}
\label{table2}
\begin{tabular}{l c c c c c }
\hline
\hline
$n^*$ & $\lambda^2(n 3 \frac{5}{2})$ & $\lambda^2(n 3 3)$& $\lambda^2(n 3 \frac{7}{2})$ & $\lambda^0(n 3 \frac{5}{2} \to n 3 \frac{7}{2})$ & $\lambda^2 (n 3 \frac{5}{2} \to n 3 \frac{7}{2})$\\
\hline
$3.3$ &0.228 & 0.277& 0.301 &0.280&--	\\
\hline 
$3.4$ &0.249 & 0.295& 0.315 &0.283 & -- 	\\
\hline 
$3.5$ &0.252	&0.303& 0.325 &0.288& --	\\
\hline 
$3.6$&0.260&0.311& 0.331 &0.289	& --	\\
\hline
$3.7$&0.275& 0.329& 0.346&0.289	&--	\\
\hline 
$3.8$&0.275 &0.334&0.354	&0.296	&-- \\
\hline
$3.9$&0.282&0.342&0.367 &0.301&0.103 \\
\hline 
$4$ &0.306&0.363&0.402	&0.320&0.117 \\
\hline 
$4.1$ &0.298&0.362	&0.412	&0.344&0.176\\
\hline 
$4.2$ &0.278&0.336&0.384	&0.351&0.267 \\
\hline 
$4.3$ &0.240&0.306	&0.333	&0.370&0.328 \\
\hline 
$4.4$ & 0.235&0.304	&0.319	&0.394&0.384\\
\hline 
$4.5$ &0.262&0.333	&0.349 &0.415&0.396\\
\hline 
$4.6$ &	0.215&0.317 &0.311	&0.440&0.411\\
\hline 
$4.7$ &	0.181&0.289 &0.284 &0.435&0.497\\
\hline 
$4.8$ &0.192&0.268	&0.269	&0.409&0.600\\ 
\hline 
$4.9$ &0.218&0.248	&0.268	&0.363&0.587\\ 
\hline 
$5$ &0.222&0.224	&0.242	&0.331&0.500\\ 
\hline  
\end{tabular}
\end{table}