\begin{table}%T3
\par
\caption{Spectral fits of the subset S3.}\label{t3}
%\centerline
{
\begin{tabular}{l|c|c|c|c|c|c|c|c|c|c|c}
\hline\hline
Source ID & Inst. & $N_{\rm H}$$^a$ & $\Gamma$  & $\chi^2$/d.o.f. & $N_{\rm H}$$^a$ & $\Gamma$
& $\chi^2$/d.o.f. &$ F^b$ &$F_u$$^b$ & $R^c$ & log~$L_{2-10~\rm keV}$$^d$ \\
\hline
& & \multicolumn{3}{c|}{$z = 1$} & \multicolumn{5}{c|}{$z = 2$}\\
\hline
03120029 &  pm  &  $<$0.56 & 1.9 & 8.2/8  & $<$1.51 & 1.9 & 8.2/8 &
1.2 & 1.2 & 18.8 & \\
03120031 &  pm  &   1.58$\pm_{0.93}^{1.59}$ & 1.9 & 0.9/6  &
4.38$\pm_{2.60}^{4.76}$ &  1.9 & 0.9/5   & 1.7 & 1.8 & 23.6 & 44.29\\
03120045  & pm  & 3.20$\pm_{1.82}^{3.34}$ & 1.9 & 6.1/8 &
9.29$\pm_{5.46}^{10.76}$ & 1.9 & 6.2/8 &   2.8 & 3.0 & 24.4 & 44.81\\
03120065  & pm  & 1.15$\pm_{1.15}^{0.28}$ & 1.9 & 6.6/9 & 3.22$\pm_{3.22}^{7.10}$& 1.9 & 6.6/9 & 1.6 & 1.7 & $\geq$24 & 43.98 \\
26900014  & pm &  0.25$\pm_{0.25}^{0.64}$ & 2.24$\pm_{0.61}^{0.80}$ &
7.0/9 & 0.69$\pm_{0.69}^{1.73}$ & 2.24$\pm_{0.61}^{0.79}$ & 7.0/9 &
1.4 & 1.4 & 21.6 &  \\
26900075  & pm  & 10.2$\pm_{5.9}^{14.2}$ & 1.9 & 0.3/4 &
32.9$\pm_{20.2}^{44.7}$ & 1.9 & 0.4/4 & 3.3 & 4.0 & 24.6 & 45.05 \\ 
05370010  & pm  &  $<$0.45 & 1.82$\pm_{0.52}^{0.75}$ &
12.3/15 & $<$1.26 &  1.83$\pm_{0.30}^{0.52}$ & 12.2/15 & 2.7 & 2.7 & 22.4 & \\
05370012 &  pm  & 0.03$\pm_{0.03}^{0.42}$ & 1.83$\pm_{0.31}^{0.52}$ &
15.9/14 & $<$1.24 & 1.83$\pm_{0.30}^{0.52}$ & 15.9/14
& 2.4 & 2.4 & 22.5 & \\
05370022 &  pm &  0.18$\pm_{0.18}^{0.38}$ & 1.9 & 7.5/6  & 0.51$\pm_{0.51}^{1.04}$ & 1.9 & 7.5/6 & 2.8 & 2.8 & $\geq$23.0 & 44.19\\
05370054 &  pm  & 0.78$\pm_{0.78}^{5.69}$ & 1.69$\pm_{0.80}^{1.92}$ &
4.6/8 &
1.68$\pm_{1.68}^{14.60}$ & 1.61$\pm_{0.71}^{1.73}$ & 4.7/8 & 2.1 & 2.1
& 25.0 & 44.88\\
05370111  & pm  &  7.04$\pm_{4.12}^{9.66}$ & 1.9 & 3.3/8 & 20.1$\pm_{12.2}^{26.5}$ &
1.9 & 3.8/8 & 2.1& 2.3 & 24.5 & 44.69\\
\hline
\end{tabular}}
\par
\medskip
$^a$ $N_{\rm H}$ in source frame, $z=1$ or $z=2$, units of 10$^{22}$~cm$^{-2}$;
$^b$ Flux in the 2--10~keV band, $F$: observed, $F_u$: corrected
for absorption, in units of 10$^{-14}$~erg~cm$^{-2}$~s$^{-1}$;
$^c$ $R$ magnitude of optical counterpart;
$^d$ Log of the luminosity in units of~erg~s$^{-1}$, only for
sources with $R$ greater than~23, for the redshift values given
in Table~\ref{t7} (see Sect.~4.2).
\end{table}