\begin{table}%t2
%\centering
\par
\caption{\label{tab:pndata}Exposures of the XMM follow-up of the \acs{\WFC}{\WFCexp} data.}  
 \begin{tabular}{llll}
\hline\hline \noalign{\smallskip}
 Object & Time (ks)\tablefootmark{a}  & Filtered time (ks) & Date (Y-M-D)\\
\hline
\src{\codee}{\codeeexp} & 17.7 & 13.8 & 2008-04-01\\
\src{\codef}{\codefexp}\tablefootmark{b} & 9.12  &  6.96 & 2008-02-21\\
\src{\codet}{\codetexp} & 1.53 & 1.53 & 2008-03-01\\ 
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{Sum of good time intervals for central CCD.}
\tablefoottext{b}{In our observation, the pointing was towards another unidentified ROSAT source (\object{1RXS~J160107.6$-$754534}) within the uncertainty circle of the \acs{\WFC}{\WFCexp}.}}
\end{table}