\begin{table}%t4
\caption{Line parameters used for the fitting procedure in the third spectral region (close to the ($0,0$) bandhead), with the same parameters as in Table~\ref{table:region1}.} % title of Table
\label{table:region3}
% is used to refer this table in the text
%\centering
 % used for centering table
\begin{tabular}{ c  c  c c  c  c c |  c  c  c c  c  c c} % centered columns (4 columns)
\hline
\hline
  $\lambda$, \AA\  &  ~~~ID     & $W_2$ &   $\tau_R$,  $10^{-8}$~s & $B_{30}$  & $v$  & $f_{vJS}$ &  $\lambda$, \AA\  &  ~~~ID     & $W_2$ &   $\tau_R$,  $10^{-8}$~s & $B_{30}$  & $v$  & $f_{vJS}$ \\  % table heading
\hline % inserts single horizontal line
3879.174&$   P_{2}( 8)$&   0.0650&   7.3078&    12&   0&      0.217&3879.185&$   P_{1}( 8)$&   0.0686&   7.2987&    12&   0&      0.246\\
3879.177&$   Q_{21}( 8)$&   0.3953&   7.2987&    12&   0&      0.002&3879.247&$   P_{1}(48)$&   0.0939&   7.1431&    78&   0&      1.407\\
3879.195&$   Q_{21}(48)$&   0.3999&   7.1431&    78&   0&      0.000&3879.306&$   P_{2}(48)$&   0.0938&   7.1435&    78&   0&      1.378\\
3879.566&$   P_{1}( 9)$&   0.0716&   7.2917&    14&   0&      0.275&3879.557&$   Q_{21}( 9)$&   0.3963&   7.2917&    14&   0&      0.002\\
3879.580&$   P_{2}( 9)$&   0.0686&   7.2980&    14&   0&      0.246&3879.649&$   P_{1}(47)$&   0.0938&   7.1485&    77&   0&      1.378\\
3879.598&$   Q_{21}(47)$&   0.3999&   7.1485&    77&   0&      0.000&3879.707&$   P_{2}(47)$&   0.0937&   7.1489&    77&   0&      1.349\\
3879.952&$   P_{1}(10)$&   0.0740&   7.2863&    16&   0&      0.304&3879.942&$   Q_{21}(10)$&   0.3970&   7.2863&    16&   0&      0.001\\
3879.967&$   P_{2}(10)$&   0.0716&   7.2909&    16&   0&      0.275&3880.029&$   P_{1}(46)$&   0.0937&   7.1538&    75&   0&      1.349\\
3879.980&$   Q_{21}(46)$&   0.3999&   7.1538&    75&   0&      0.000&3880.087&$   P_{2}(46)$&   0.0935&   7.1542&    75&   0&      1.320\\
3880.317&$   P_{1}(11)$&   0.0761&   7.2819&    17&   0&      0.333&3880.305&$   Q_{21}(11)$&   0.3975&   7.2819&    17&   0&      0.001\\
3880.332&$   P_{2}(11)$&   0.0740&   7.2854&    17&   0&      0.304&3880.389&$   P_{1}(45)$&   0.0935&   7.1590&    73&   0&      1.320\\
3880.340&$   Q_{21}(45)$&   0.3999&   7.1590&    73&   0&      0.000&3880.446&$   P_{2}(45)$&   0.0934&   7.1594&    73&   0&      1.291\\
3880.662&$   P_{11}(12)$&   0.0778&   7.2782&    19&   0&      0.362&3880.649&$   Q_{21}(12)$&   0.3979&   7.2782&    19&   0&      0.001\\
3880.678&$   P_{2}(12)$&   0.0761&   7.2809&    19&   0&      0.333&3880.728&$   P_{1}(44)$&   0.0934&   7.1641&    72&   0&      1.291\\
3880.681&$   Q_{21}(44)$&   0.3998&   7.1641&    72&   0&      0.000&3880.784&$   P_{2}(44)$&   0.0933&   7.1645&    72&   0&      1.262\\
3880.985&$   P_{1}(13)$&   0.0794&   7.2749&    21&   0&      0.391&3880.971&$   Q_{21}(13)$&   0.3982&   7.2749&    21&   0&      0.001\\
\hline
\end{tabular}
\end{table}