\begin{table}%t5
\caption{\label{arcs_submm_massive}Predicted number of submm ($850~\mu$m) arcs produced by SMGs
for an all-sky survey, using only clusters with $M \ge 5$~$\times$ $10^{14}~M_\odot~h^{-1}$ to compute the optical depths (see Fig.~\ref{fig:arcCounts_mass}).}
\small%\centerline
 {
\begin{tabular}{c|cc|cc|cc|cc}
\hline\hline
&&&&&&&& \\[-8pt]
$B_{850~\mu{\rm m}}^{(1)}$   & \multicolumn{2}{c|}{$\rm 5~mJy~arcsec^{-2}$} & \multicolumn{2}{c|}{$\rm 1~mJy~arcsec^{-2}$} & \multicolumn{2}{c|}{$\rm 0.5~mJy~arcsec^{-2}$} & \multicolumn{2}{c}{$\rm 0.1~mJy~arcsec^{-2}$} \\
$d_{0}^{~(2)}$       &  $7.5$ & $10$        & $7.5$ & $10$  & $7.5$ & $10$  & $7.5$ & $10$ \\
&&&&&&&& \\[-8pt]
\hline 
&&&&&&&& \\[-8pt]
SPZ DB$^{~(3)}$ &17 &8  &125  &42  &267  &92  &1633   &550  \\
PHZ DB$^{~(3)}$ &17 &8  &133  &42  &283  &92  &1733   &583  \\
CHM DB$^{~(3)}$ &25 &8  &150  &50  &325  &108  &2008  &683  \\
\hline
&&&&&&&& \\[-8pt]
SPZ SM$^{~(3)}$ &17  &8 &75  &25  &117  &42  &308  &108  \\
PHZ SM$^{~(3)}$ &17  &8 &75  &25  &125  &42  &333  &108  \\
CHM SM$^{~(3)}$ &25  &8 &83  &33  &142  &50  &383   &133    \\
\hline
\end{tabular}}
\medskip
$^{(1)}$~Surface brightness limit used to determine the number of arcs;
$^{(2)}$~arc length-to-width ratio thresholds;
$^{(3)}$~redshift distribution and number count function, as introduced in Figs.~\ref{fig:zd} and~\ref{fig:cc}.
\end{table}