\begin{table}%t2
\caption{\label{table:2}Summary of the results of the spectral fitting of the type-1 AGN stacked spectra.}
%\centering
\small 
\begin{tabular}{c c c c c c c c c c c c c c c c c c c}         
\hline\hline\noalign{\smallskip}                  
${\langle z \rangle}$ &  ${\rm \Gamma_{best-fit}}$ & ${\it kT}_{{\rm best-fit}}$ & ${\rm \Gamma_{2-10~keV}}$\\
 (1) & (2) & (3) & (4) \\
\hline                         
 0.31 & 1.69 $\pm$ 0.03 & 0.11 $\pm$ 0.01 & 1.60 $\pm$ 0.07\\
 0.74 & 2.02 $\pm$ 0.04 & 0.09 $\pm$ 0.01 & 1.83 $\pm$ 0.10\\
 0.94 & 1.97 $\pm$ 0.03 &    --          & 1.96 $\pm$ 0.08\\
 1.19 & 2.01 $\pm$ 0.03 &   --           & 1.93 $\pm$ 0.04\\
 1.45 & 1.93 $\pm$ 0.06 &   --           & 2.01 $\pm$ 0.17\\
 1.74 & 1.99 $\pm$ 0.05 &   --           & 1.91 $\pm$ 0.11\\
 2.01 & 1.81 $\pm$ 0.05 &   --           & 1.81 $\pm$ 0.12\\
 2.56 & 1.81 $\pm$ 0.05 &   --           & 1.77 $\pm$ 0.20\\
\hline                                   
\end{tabular}
\tablefoot {(1) Mean redshift in bin. (2) Best-fit $\Gamma$~value. (3)~Rest-frame temperature of the blackbody model (in~keV) used to fit the soft excess component. (4)~Best-fit $\Gamma$ from a power-law fitting in the 2$-$10~keV rest-frame band. Errors are 90\%~confidence.}
\end{table}