\begin{table}%t5
\caption{\label{pearsonvimos_lumi}Linear Pearson correlation coefficients~$r$ and linear fits for for the class~1 and 2~LIRGs distributed in luminosity groups spanning the entire luminosity        range.} 
%%\centering

\par
\begin{tabular}{ccccccccccccc}
\hline \hline \noalign{\smallskip}
Luminosity Range & 
\multicolumn{2}{c}{[N~\textsc{ii}]$\lambda$6584/H$\alpha$} &
\multicolumn{2}{c}{[S~\textsc{ii}]$\lambda$6717,6731/H$\alpha$} &
\multicolumn{2}{c}{[O~\textsc{i}]$\lambda$6300/H$\alpha$}\\
 ($\log(L/L_\odot)$)& $r$ & A+Bx &  $r$ & A+Bx & $r$ & A+Bx \\
\hline
11.00--11.25 & 0.49 & --0.97 + 0.39 x &  0.63 & --1.39 + 0.54 x & --0.05 & --1.12 -- 0.09 x\\
11.25--11.50 & 0.72 & --1.24 + 0.51 x &  0.63 & --1.19 + 0.37 x & 0.68 & --3.09 + 1.01 x\\
11.50--11.75 & 0.28 & --0.77 + 0.22 x &  0.24 & --0.81 + 0.20 x & 0.35 & --2.47 + 0.61 x\\
11.75--12.00 & 0.59 & --1.58 + 0.64 x &  0.43 & --1.21 + 0.41 x & 0.46 &
--3.01 + 0.95 x \\
\hline
\end{tabular}
%\vspace*{5mm}
\end{table}