\begin{table}%t1
%\begin{center}
\par
\caption{\label{tab_2xmmpsel}Results of visual screening of the selected 2XMMp sources discriminated by selection region.}
\begin{tabular}{l c c c c} 
\hline \hline
 & I & II & III & IV\\
\hline
Known INSs                                & 16 &  0 &  1 &  1 \\
INS candidates                            &  1 &  5 & 24 &  2 \\
Solar system objects                      &  2 &  0 &  0 &  0 \\
Extragalactic X-ray sources               & 12 & 31 & 39 &  6 \\
Bright knots in SNRs                      &  9 & 59 & 18 & 51 \\
Diffuse emission in clusters of galaxies  &  2 &  6 &  9 &  0 \\
Spurious out-of-time events / edge        & 10 & 70 & 58 &  8 \\
Spurious in wing of bright object         &  2 & 15 & 18 &  6 \\
Sources in CCD gap                        &  3 & 13 & 46 &  5 \\
Other                                     &  2 &  3 &  8 &  0 \\
\hline
Total                                     & 59 & 202& 221& 79 \\
\hline
\end{tabular}
%\end{center}
\par
\end{table}