\begin{table}%t2
%\centering
\par
\caption{\label{tab:numbers}Number of sources for which photometry is available.}
\small \begin{tabular}{lccc}
\hline\hline
Cloud &  $R$, $I$, or $z_{\rm WFI}$ & $RIz_{\rm WFI}$ &  $RIz_{\rm WFI}JHK$ \\
  \hline  
Lupus~1 & 329~252 & 220~967 & 37~523 \\
Lupus~3 & 742~411 & 578~591 & 82~981 \\
Lupus~4 & 328~336 & 234~706 & 36~911 \\
\hline
\end{tabular}
\end{table}