\begin{table}%t2
\caption{\label{tbl:event}Number of events at each step of the process for the preparation of the PSC.}
%\centering
\par
\begin{tabular}{lrr}
\hline\hline \noalign{\smallskip}
  & 9~$\mu$m & 18~$\mu$m\\
  \hline
Detected                  & 16~752~471 & 9~655~059 \\
Milli-seconds confirmed   & 4~929~586 & 1~300~945\\
Hours or months confirmed & 851~189$^*$ & 195~893\tablefootmark{*}\\
Band merged               &\multicolumn{2}{c}{877~091\tablefootmark{*}}\\ 
\hline
\end{tabular}
\tablefoot {\tablefoottext{*}{-- Current values. The number of sources  may be updated in further catalog releases.}}
\end{table}