\begin{table}%T3
%\centering
\par
\caption{Observed and simulated surface densities of objects (in
  arcmin$^{-2}$) recovered using the selection box
  (Eq.~(\ref{eq:selbox})), based on simulations described in
  Sect.~\ref{sec:robustn-select-box} and observations in the
  CFDF-14~hr field. We also estimate the fraction of Lyman-break
  galaxies (LBG) recovered using this selection box from the total
  galaxy population in this redshift range.  Additionally, we present
  the fraction of contaminants within this selection box by
  interlopers (lower-redshift galaxies) outside our redshift range
  ($2.9<z<3.4$) and by interlopers with $z<2$ and by stars.}
\label{tab:contam}
\begin{tabular}{*{7}{c}}\hline \hline 
magnitude range & \multicolumn{2}{c}{density of objects} & LBG & 
\multicolumn{3}{c}{contamination from} \\
($I_{AB}$)  & \multicolumn{2}{c}{in the selection box from} &  found in the &
 interlopers outside & interlopers & stars \\
 & observations & simulations & selection box & our $2.9<z<3.5$ range & with $z<2$ & \\
\hline               
20.0--23.5 & 0.069 & 0.073 & 91.8\% &  7.7\% &  2.2\% & 5.5\%\\
20.0--24.0 & 0.233 & 0.233 & 89.7\% & 11.9\% &  6.3\% & 4.3\%\\
20.0--24.5 & 0.574 & 0.652 & 83.9\% & 24.5\% & 17.3\% & 3.5\%\\
 &  &  &  &  &  & \\
23.5--24.0 & 0.164 & 0.160 & 88.7\% & 13.9\% &  8.2\% & 3.8\%\\
24.0--24.5 & 0.341 & 0.419 & 80.2\% & 31.4\% & 23.5\% & 3.1\%\\
\hline  
\end{tabular}
\end{table}