\begin{table}%T1
\caption{Log of \xmm\ observations and data of EXO~0748$-$676 used in this
paper. From left to right: observation number for this paper,
observation date with start and end time, the camera (EPIC-MOS1 or
EPIC-pn) with mode and filter, and exposure time.}\label{tab:log}
\par
%\centerline
{
\begin{tabular}{cccc}
\hline
\hline
Obs.\ & Date and Start-End Time & Camera             & Exp.\  \\
      & (TT)   & [Mode, Filter]$^a$  & (ks)  \\
\hline
1 & 2000-04-04 17:19--22:53 & MOS1 [FF,T] & 20.0 \\
\hline
2 & 2000-04-21 03:59--09:04 & PN [FF,M] & 18.1 \\
  & 2000-04-21 09:50--10:44 & PN [LW,M] & 3.2 \\
  & 2000-04-21 15:22--20:24 & PN [SW,M] & 18.1 \\
\hline
3 & 2001-02-03 17:32--19:32 & MOS1 [FF,M] & 7.2 \\
  & 2001-02-04 01:23--11:54 & MOS1 [FF,M] & 21.6 \\
\hline
4 & \mbox{\hspace{0.15cm}}2001-10-13 00:19--01:01$^b$ & MOS1 [FF,M] & 32.9 \\
\hline
\end{tabular}}
\par
\medskip
$^a$ Mode: FF = Full Frame, LW = Large Window, SW = Small Window;
Filter: T = Thick, M = Medium. \\ $^b$ Observation ended on 2001-10-14. 
\end{table}