\begin{table}
\caption{Numbers of galaxies in distance-dependent samples}
\label{Tab3}
\begin{tabular}{cccc}
\hline\hline
\noalign{\smallskip}
  Distance interval$^{a}$ & First-ranked gal. & Isolated gal. & Fraction$^{b}$
\\ 
\hline
\noalign{\smallskip}
  70--200 & 5184 &16724 & 0.24   \\
 200--300 & 6931 &22928 & 0.23   \\
 300--400 & 7450 &28930 & 0.20   \\
 400--500 & 3888 &22426 & 0.15   \\
\hline
\end{tabular}
\begin{description}{}{}
\item[$^a$] Distances are in units \Mpc.
\item[$^b$] Fraction of first-ranked galaxies in the first-ranked+isolated
sample. 
\end{description}
\end{table}