\begin{table}%t13
\caption{\label{grinfo}Possible dynamical pairs.}
\par
%\centering
\par
\begin{tabular}{lcc}
\hline \hline \noalign{\smallskip}
Pair & Projected distance [kpc] & $\Delta$ $V$ [km~s$^{-1}$] 	\\
\hline
2F10 \& 2F11 & 262 & 420 \\
4F10 \& 4F12 & 737 & 90 \\
4F5 \& 4F6 & 842 & 60 \\
4F6 \& 4F7 & 775 & 360 \\
4F5 \&4 F7 & 1170 & 230 \\
\hline
\end{tabular}
\tablefoot {Column (1): names of the galaxies; Col.~(2): the projected distance between them; Col.~(3): the difference between their radial \mbox{velocities}.}
\vspace*{3mm}
\end{table}