\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}