\begin{table}%t4
%\centering
\par
\caption{\label{ncbtab}Number of companions in $B$-band luminosity-selected samples.}
\begin{tabular}{lcccc}
\hline\hline \noalign{\smallskip}
Reference & $z$ & $-22 < M_B \leq -20$ & $-22 < M_B \leq -19.5$ & $-22 < M_B \leq -19$\\
\hline
Present work (GOODS-S)  & 0.425  & $0.022 \pm 0.013$ & $0.029 \pm 0.010$ & $0.036 \pm 0.009$ \\
& 0.875  & $0.041 \pm 0.010$ & $0.057 \pm 0.009$ & $0.064 \pm 0.008$\\
Present work (MGC)	& 0.092  & $0.011 \pm 0.004$ & $0.024 \pm 0.005$ & $0.034 \pm 0.005$ \\
\citet{patton00}\tablefootmark{a}	& 0.015  & $0.008 \pm 0.002$ & $0.012 \pm 0.003$ & $0.019 \pm 0.004$ \\
\citet{patton02}\tablefootmark{b}    & 0.297  & $0.014 \pm 0.003$ & $0.023 \pm 0.006$ & $0.035 \pm 0.008$ \\
\citet{lin04}\tablefootmark{c}     	& 0.1    & \ldots            & \ldots            & $0.024 \pm 0.010$ \\
& 0.6    & \ldots            & $0.036 \pm 0.011$ & \ldots            \\
& 1.1    & $0.049 \pm 0.013$ & \ldots            & \ldots            \\
\citet{lin08}\tablefootmark{c}       & 0.077  & \ldots            & \ldots            & $0.031 \pm 0.004$ \\
& 0.48   & \ldots            & $0.036 \pm 0.005$ & \ldots            \\
& 0.85   & $0.040 \pm 0.005$ & \ldots            & \ldots           \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{Original data are obtained with $h = 1$.}
\tablefoottext{b}{Original data are obtained with $h = 1$ and $M_B^{\rm e}(z) = M_B - z$ sample selection.}
\tablefoottext{c}{We use the Eq.~(\ref{ncz}) parameters provide for $-21 < M_B^{\rm e}(z)$~(AB) $\leq -19$ galaxies, where $M_B^{\rm e}(z) = M_B - Qz$, with $Q = 1$ in \citet{lin04} and $Q = 1.3$ in \citet{lin08}. The search radius is $10h^{-1} < r_{\rm p} \leq 30~{\rm h}^{-1}$~kpc, so we multiply their values by~3/4 to normalize their results at $15~{\rm h}^{-1}$~kpc (from the correlation funtion study of \citealt{bell06}).}}
\end{table}