\begin{table}%t2
\caption{Comparison between cross sections obtained by CC and CS methods.}            
\label{tab2}      
%%\centering
\par
\small                          
\begin{tabular}{c | r r | r r | r r | r r | r r}                        
\hline \hline
%&&&&&&&&&& \\[-8pt]
Transitions &  \multicolumn{2}{| c |}{$E=10$~cm$^{-1}$} &\multicolumn{2}{| c |}{$E=20$~cm$^{-1}$} & \multicolumn{2}{| c |}{$E=50$~cm$^{-1}$} & \multicolumn{2}{| c }{$E=100$~cm$^{-1}$}  & \multicolumn{2}{| c }{$E=200$~cm$^{-1}$}\\ 
$j$ $\to$ $j'$ & CC & CS & CC & CS & CC & CS & CC & CS & CC & CS\\ 
\hline
1 $\to$ 0 & 16.75 & 10.53 & 9.41 & 12.29 & 5.78 & 5.72 & 3.54 & 3.43 & 1.98 & 1.93\\ 
2 $\to$ 0 & 11.12 & 9.41 & 9.57  & 6.92 & 8.23 & 8.37 & 5.58 & 6.60 &4.07 & 4.63\\ 
2 $\to$ 1 & 25.20 & 17.53 & 13.63 & 13.09 & 8.56 & 8.54 & 6.04 & 6.06 & 4.03 &  4.01\\ 
3 $\to$ 0 & 1.86 & 1.71 & 1.03 & 1.02 & 0.847 & 1.06 & 0.982 & 1.06 & 0.921&  0.93\\ 
3 $\to$ 1 & 21.97 & 17.47 & 16.00 & 12.52 & 13.09 & 14.84 & 9.21  & 10.49 & 6.97& 7.56\\             3 $\to$ 2 & 31.30 & 23.76 & 17.44 & 18.28 & 9.75 & 9.92 & 6.73 & 6.84 & 4.64 &  4.67\\               5 $\to$ 0 & 4.82 & 2.86 & 0.82 & 1.10 & 0.46 & 0.62 & 0.33 & 0.39 & 0.35 &  0.38\\ 
5 $\to$ 1 & 11.28 & 7.19 & 3.61  & 2.79 & 2.77 & 3.16 & 2.21 & 2.14 & 1.90 &  1.72\\ 
5 $\to$ 2 & 14.94 & 10.57 & 4.28 & 5.11 & 2.51 & 3.08 & 2.46 & 2.69 & 2.29 &  2.37\\                 5 $\to$ 3 & 72.82 & 56.26 & 20.70 & 22.25 & 16.23 & 17.25 & 11.20 & 12.46 & 8.46 & 9.05\\ 
5 $\to$ 4 & 93.67 & 74.66 & 26.95 & 22.73 & 11.55 & 11.40 & 7.51 & 7.63 & 5.20 &  5.22\\ 
10 $\to$ 5 & ... & ... & ... & ... & 2.36 & 2.40 & 1.27 & 1.46 & 1.27 &  1.36\\                      10 $\to$ 6 & ... & ... & ... & ... & 5.81 & 4.94 &  3.54 & 3.22 & 2.84 &  2.61 \\                    10 $\to$ 7 & ... & ... & ... & ... & 5.03 & 4.82 & 3.01 & 3.19 & 2.86 & 2.97 \\                      10 $\to$ 8 & ... & ... & ... & ... & 25.18 & 20.77 & 14.41 & 13.96 & 9.74 & 10.12 \\                 10 $\to$ 9 & ... & ... & ... & ... &  22.71& 22.67 & 8.87 & 8.99 & 5.47 & 5.52 \\                    \hline             
\end{tabular}
\end{table}