\begin{table}%t8
\caption{\label{evol_merger}Best fit parameters of $m_{\rm mg}$ and $N_{\rm mg} (z=0)$ for major mergers as a function of the dynamical parameters for the faint sample and for galaxies with $\Delta M_{B} \leq 1.5$.}
%\centering
\small
\begin{tabular}{c c c c c}
\hline\hline
%&&&& \\[-8pt]
\multicolumn{5}{c}{${\Delta v \leq 500~{\rm km~s}^{-1}}$}\\ 
 $r_{\rm p}$ & $20~h^{-1}~{\rm kpc}$ & $30~h^{-1}~{\rm kpc}$ & $50~h^{-1}~{\rm kpc}$ & $100~h^{-1}~{\rm kpc}$ \\
%&&&& \\[-8pt]
 \hline 
$m_{\rm mg}$ & $2.63 \pm 1.96$ & $2.01 \pm 1.32$ & $1.33 \pm 0.98$ & $2.20 \pm 0.77$ \\ 
$N_{\rm mg} (z=0) \times 10^{-4}$ & $2.93 \pm 3.14$ & $4.03 \pm 2.88$ & $7.70 \pm 4.05$ & $4.96 \pm 2.07$ \\ 
%&&&& \\[-8pt]
\hline
%&&&& \\[-8pt]
\multicolumn{5}{c}{${\Delta v \leq 1000~{\rm km~s}^{-1}}$}\\ 
 $r_{\rm p}$ & $20~h^{-1}~{\rm kpc}$ & $30~h^{-1}~{\rm kpc}$ & $50~h^{-1}~{\rm kpc}$ & $100~h^{-1}~{\rm kpc}$ \\ 
%&&&& \\[-8pt]
 \hline
$m_{\rm mg}$  & $1.19 \pm 1.48$ & $1.50 \pm 1.08$ & $1.42 \pm 0.58$ & $1.15 \pm 0.50$\\ 
$N_{\rm mg} (z=0) \times 10^{-4}$ & $8.98 \pm 7.12$ & $7.14 \pm 4.16$ & $9.40 \pm 2.94$ & $11.7 \pm 3.10$ \\ 
%&&&& \\[-8pt]
\hline
%&&&& \\[-8pt]
\multicolumn{5}{c}{${\Delta v \leq 2000~{\rm km~s}^{-1}}$}\\ 
 $r_{\rm p}$ & $20~h^{-1}~{\rm kpc}$ & $30~h^{-1}~{\rm kpc}$ & $50~h^{-1}~{\rm kpc}$ & $100~h^{-1}~{\rm kpc}$ \\ 
%&&&& \\[-8pt]
 \hline
$m_{\rm mg}$ & $0.93 \pm 1.00$ & $1.31 \pm 1.23$ & $0.49 \pm 0.78$ & $-0.02 \pm 0.15$ \\ 
$N_{\rm mg} (z=0) \times 10^{-4}$ & $11.0 \pm 5.89$ & $8.49 \pm 5.61$ & $17.5 \pm 7.24$ & $27.2 \pm 2.13$ \\ 
\hline
\end{tabular} 
\end{table}