\begin{table}%t1
\caption{\label{obstab}XMM-Newton data used for the analysis.}
%\centerline
{
\begin{tabular}{clcccccll}
\hline\hline
\multicolumn{1}{c}{1} & \multicolumn{1}{c}{2} & \multicolumn{2}{c}{3} & \multicolumn{1}{c}{4} &
\multicolumn{1}{c}{5} & \multicolumn{1}{c}{6} & \multicolumn{1}{c}{7} & \multicolumn{1}{c}{8} \\
\hline
\multicolumn{1}{c}{Rev.} & \multicolumn{1}{c}{Obs.\ ID} & \multicolumn{2}{c}{Pointing direction} & \multicolumn{1}{c}{Inst.} & \multicolumn{1}{c}{Mode} & \multicolumn{1}{c}{Filter} & \multicolumn{1}{c}{Start time (UT)} & \multicolumn{1}{c}{End time (UT)} \\
\multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{RA} & \multicolumn{1}{c}{Dec} & \multicolumn{1}{c}{(EPIC)} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} \\
\multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{2}{c}{(J2000.0)} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} & \multicolumn{1}{c}{} \\
\hline
157 & 01100002 & 00 59 46.6 & --72 09 30 & PN & Full  & Medium & 2000/10/17 16:16:36 & 2000/10/17 20:41:09 \\
    &            &            &            & M1 & Full  & Medium  & 2000/10/17 15:10:44 & 2000/10/17 20:39:43 \\
    &            &            &            & M2 & Full  & Medium  & 2000/10/17 15:10:35 & 2000/10/17 20:39:42 \\
247 & 01357206 & 01 03 29.0 & --72 02 33 & PN & Full  & Thin1 & 2001/04/15 01:20:28 & 2001/04/15 05:50:27 \\
    &            &            &            & M1 & PW3 & Thin1 & 2001/04/14 20:47:25 & 2001/04/15 05:55:45 \\
    &            &            &            & M2 & PW3 & Thin1 & 2001/04/14 20:47:25 & 2001/04/15 05:55:45 \\
340 & 00842008 & 00 54 54.3 & --73 40 12 & PN & Full  & Thin1 & 2001/10/17 10:46:50 & 2001/10/17 15:55:11 \\
    &            &            &            & M1 & Full  & Medium  & 2001/10/17 10:07:40 & 2001/10/17 15:59:35 \\
    &            &            &            & M2 & Full  & Medium  & 2001/10/17 10:07:40 & 2001/10/17 15:59:36 \\
422 & 00842001 & 00 56 24.4 & --72 21 33 & PN & Full  & Thin1 & 2002/03/30 14:21:45 & 2002/03/30 19:39:38 \\
    &            &            &            & M1 & Full  & Medium  & 2002/03/30 13:48:28 & 2002/03/30 19:44:36 \\
    &            &            &            & M2 & Full  & Medium  & 2002/03/30 13:48:29 & 2002/03/30 19:44:54 \\
\hline
\end{tabular}}
\medskip
Notes to Col.~5:
PW3: Partial Window 3. \\
Notes to Col.~4:
M1: MOS1, M2: MOS2. 
\end{table}