\begin{table}%Ta1
\caption{\label{TOBS}XMM-Newton 2007 observations of \object{PG~2112+059}.}
\small%\centering
\par
\begin{tabular}{rllcc}
\hline\hline \noalign{\smallskip}
$N$.\tablefootmark{1} & $I$.\tablefootmark{2} & Filter & Start         & Duration \\
          &        &        & Day and time     &             \\
                 &        &        &  [UT]   & [ks] \\ 
\hline  
\multicolumn{5}{c}{\underline{May 2007 / 5005006}} \\ 
1  & M1 & thin 1          &  3 at 21:45:41 &  24.1 \\
2  & M2 & thick           &  3 at 21:45:41 &  24.1 \\
3  & pn & thin 1          &  3 at 22:08:23 &  22.1 \\
6  & OM & $V$               &  3 at 21:50:19 &   2.2 \\
7  & OM & $U$-NoBar         &  3 at 22:32:06 &   2.2 \\
8  & OM & $B$               &  3 at 23:13:53 &   2.2 \\
9  & OM & $V$ GRISM 2       &  4 at 23:55:40 &   4.0 \\
10 & OM & {\it UVW1}            &  4 at 01:07:27 &   2.2 \\
11 & OM & {\it UVM2}            &  4 at 01:49:14 &   2.2 \\
12 & OM & {\it UVW2}            &  4 at 02:31:01 &   2.8 \\
13 & OM & $UV$ GRISM 1      &  4 at 03:22:48 &   3.8 \\ 
\multicolumn{5}{c}{\underline{May 2007 / 5005007}} \\ 
1  & M1 & thin 1          & 19 at 10:03:47 & 100.0  \\
2  & M2 & thick           & 19 at 10:03:47 & 100.0  \\
3  & pn & thin 1          & 19 at 10:26:29 &  98.4  \\
6  & OM & $V$               & 19 at 10:08:25 & 2 $\times$ 3.3 \\
9  & OM & $U$-NoBar         & 19 at 12:08:39 & 2 $\times$ 3.3 \\
12 & OM & $B$               & 19 at 14:08:53 & 2 $\times$ 3.3 \\
15 & OM & $V$ GRISM 2       & 19 at 16:09:07 & 4 $\times$ 5.0 \\
19 & OM & {\it UVW1}            & 19 at 22:48:45 & 2 $\times$ 3.3 \\
20 & OM & {\it UVW1}            & 20 at 00:48:59 &            3.5 \\
21 & OM & {\it UVM2}            & 20 at 01:52:26 & 3 $\times$ 3.9 \\
25 & OM & {\it UVW2}           & 20 at 05:23:59 & 3 $\times$ 3.5 \\
28 & OM & $UV$ GRISM 1      & 20 at 08:34:20 & 2 $\times$ 5.0 \\ 
30 & OM & $UV$ GRISM 1      & 20 at 08:34:20 & 2 $\times$ 4.7 \\ 
\multicolumn{5}{c}{\underline{May 2007 / 5005008}} \\ 
1  & M1 & thin 1          & 21 at 11:19:23 &  91.9  \\
2  & M2 & thick           & 21 at 11:40:27 &  90.6  \\
3  & pn & thin 1          & 21 at 11:42:58 &  90.2  \\
6  & OM & $V$               & 21 at 10:00:35 & 2 $\times$ 3.3 \\
9  & OM & $U$-NoBar         & 21 at 12:00:49 & 2 $\times$ 3.3 \\
12 & OM & $B$               & 21 at 14:01:03 & 2 $\times$ 3.3 \\
15 & OM & $V$ GRISM 2       & 21 at 16:01:17 & 4 $\times$ 5.0 \\
19 & OM & {\it UVW1}           & 21 at 22:40:43 & 2 $\times$ 3.3 \\
21 & OM & {\it UVW1}            & 21 at 00:40:57 &            3.5 \\
22 & OM & {\it UVM2}            & 22 at 01:44:24 & 3 $\times$ 3.7 \\
25 & OM & {\it UVW2}            & 22 at 05:07:39 & 2 $\times$ 3.5 \\
29 & OM & $UV$ GRISM 1      & 22 at 08:18:00 &            4.7 \\ 
30 & OM & $UV$ GRISM 1      & 22 at 08:18:00 &            5.0 \\ 
\multicolumn{5}{c}{\underline{November 2007 / 5005009}} \\ 
1  & M1 & thin 1         &  5 at 09:52:51 &  91.9  \\
2  & M2 & thick          &  5 at 09:52:51 &  90.6  \\
3  & pn & thin 1         &  5 at 10:15:12 &  90.2  \\
6  & OM & $V$              &  5 at 09:57:29 &            2.0 \\
9  & OM & $U$-NoBar        &  5 at 10:35:56 &            2.5 \\
12 & OM & $B$              &  5 at 11:22:43 &            2.0 \\
15 & OM & $V$ GRISM 2      &  5 at 12:01:10 & 2 $\times$ 4.0 \\
19 & OM & {\it UVW1}           &  5 at 14:24:44 & 2 $\times$ 3.5 \\
23 & OM & {\it UVM2}           &  5 at 16:31:38 & 2 $\times$ 3.5 \\
26 & OM & {\it UVW2}           &  5 at 18:38:32 & 2 $\times$ 3.5 \\
29 & OM & $UV$ GRISM 1     &  5 at 20:45:26 &            4.0 \\ 
30 & OM & $UV$ GRISM 1     &  5 at 21:57:13 &            4.4 \\ 
31 & OM &$ UV$ GRISM 1     &  5 at 23:16:17 &            3.4 \\  
\hline  
\end{tabular}
\tablefoot{\tablefoottext{1}{Exposure identifier: 
     If OM performed more than one exposure with the same specifications 
      (filter, grism and exposure time) then only exposure identifier and 
      start time of the first exposure is provided;}
      \tablefoottext{2}{instrument, where M1 stands for MOS 1 and M2 for MOS2.}}
\end{table}