\begin{table}%t3
\caption{\label{tab2}Comparison between cross sections obtained by Close Coupling and Coupled States approach.}            
\small      
%\centering
\par
\begin{tabular}{c | c c | c c | c c | c c}
\hline\hline                        
Transitions &  \multicolumn{2}{| c |}{$E_{\rm k}=50$~cm$^{-1}$} &\multicolumn{2}{| c |}{$E_{\rm k}=100$~cm$^{-1}$} & \multicolumn{2}{| c |}{$E_{\rm k}=500$~cm$^{-1}$} & \multicolumn{2}{| c }{$E_{\rm k}=1000$~cm$^{-1}$} \\ 
$J_{i} \to J_{f}$ & CC & CS~& CC & CS~& CC & CS~& CC & CS\\ 
\hline
0 $\to$ 1 & 10.511 & 10.968 & 7.105 & 7.114 & 3.758 & 3.504 & 2.887 & 2.601 \\ 
0 $\to$ 2 & 10.437 & 10.397 & 9.617 & 9.714 & 9.555 & 9.588 & 7.092 & 7.138 \\
0 $\to$ 5 & 2.177 & 2.304 & 2.586 & 2.532 & 1.561 & 1.460 & 1.906 & 1.823 \\ 
0 $\to$ 10 & ... & ...  & 0.116 & 0.174 & 0.972 & 0.936 & 1.023 & 0.997 \\
0 $\to$ 20 & ... & ...  & ... & ... & 0.044 & 0.075 & 0.408 & 0.387 \\
1 $\to$ 2 & 8.671 & 8.802 & 6.114 & 6.032 & 3.644 & 3.408 & 2.914 & 2.650 \\
1 $\to$ 3 & 8.356 & 7.841 & 7.273 & 7.073 & 8.043 & 8.021 & 6.393 & 6.389 \\                                 
1 $\to$ 6 & 1.578 & 1.663 & 2.169 & 2.154 & 1.384 & 1.293 & 1.566 & 1.493 \\                                 
1 $\to$ 11 & ... & ... & ... & ... & 0.879 & 0.843 & 0.869 &0.843  \\
1 $\to$ 21 & ... & ... & ... & ... & 0.018 & 0.017 & 0.394 & 0.379 \\
10 $\to$ 11 & 7.079 & 7.163 & 5.202 & 4.998 & 3.239 & 3.067 & 2.683 & 2.483 \\                                 
10 $\to$ 12 & 4.121 & 3.896 & 3.954 & 4.187 & 5.294 & 5.348 & 4.535 & 4.566 \\
10 $\to$ 15 & ... & ... & ... & ... & 1.020 & 0.974 & 1.117 & 1.052 \\
10 $\to$ 20 & ... & ... & ... & ... & 0.404 & 0.411 & 0.530 & 0.537 \\                                 
10 $\to$ 30 & ... & ... & ... & ... & ... & ... & 0.117 & 0.140 \\  
\hline                               
\end{tabular}
\end{table}