\begin{table}%t2
\caption{\label{table:fit-results}Results of spectral fitting in different redshift bins.}
\par
%\centering
{\small
\begin{tabular}{*{11}{c}} 
\hline\hline
\noalign{\smallskip}
 $z_{\rm median}$ & $E$(K$\alpha$) & Binwidth & Total & Spectral & log $L_{\rm X}$(2--10~keV) & $\Gamma$ & Eqw & $\chi^2$/d.o.f.  & $\chi^2$/d.o.f. & $F$-prob \\
& (keV)  & (keV) & sources & counts & erg s$^{-1}$ &  & (eV) & wabs(pow+zgauss) & wabs(pow) & \\ 
 (1) & (2) &(3) &(4)& (5)& (6)& (7)& (8) & (9) & (10) & \B (11)\\
 \hline
\multicolumn{11}{c}{\T zbin: 0.0--0.2 \B}\\ 
\hline
\T 0.02 & 6.26 & 0.21 & 20(8) & 10~440 & $41.58^{\rm +0.05}_{-0.11}$ & $0.93^{\rm +0.08}_{-0.07}$ & $398^{\rm +54}_{-53}$ & 491.9/435 & 642.5/437 & \B $>$99.999\\
0.03 & 6.22 & 0.28 & 20(9) & 8421 & $41.81^{\rm +0.04}_{-0.14}$ & $1.04^{\rm +0.06}_{-0.05}$ & $455^{\rm +65}_{-66}$ & 420.8/351 & 544.9/353 & \B $>$99.999\\
0.06 & 6.01 & 0.83 & 23(4) & 9433 & $42.43^{\rm +0.05}_{-0.12}$ & $1.06^{\rm +0.09}_{-0.08}$ & $163^{\rm +54}_{-52}$ & 373.4/385 & 399.3/387 & \B $>$99.999\\
0.09 & 5.89 & 0.81 & 21(6) & 13~986 & $42.83^{\rm +0.05}_{-0.10}$ & $1.52^{\rm +0.10}_{-0.09}$ & $105^{\rm +66}_{-31}$ & 508.9/518 & 527.7/520 &\B 99.991\\
0.12 & 5.71 & 0.75 & 22(3) & 11~932 & $43.28^{\rm +0.05}_{-0.09}$ & $1.20^{\rm +0.08}_{-0.08}$ & $105^{\rm +45}_{-46}$ & 474.1/472 & 488.3/474 & \B 99.906\\ 
0.16 & 5.51 & 0.67 & 24(6) & 24~645 & $43.94^{\rm +0.03}_{-0.06}$ & $1.37^{\rm +0.05}_{-0.04}$ & $75^{\rm +30}_{-29}$ & 712.9/737 & 729.3/739 & \B 99.976\\ 
\hline 
\multicolumn{11}{c}{\T zbin: 0.2--0.3 \B}\\ 
\hline
\T 0.25 & 5.12 & 0.32 & 21(2) & 6415 & $43.14^{\rm +0.05}_{-0.31}$ & $1.88^{\rm +0.12}_{-0.07}$ & $201^{\rm +110}_{-109}$ & 259.5/260 & 268.3/262 & \B 98.717\\
0.24 & 5.14 & 0.34 & 21(2) & 27~481 & $44.18^{\rm +0.03}_{-0.06}$ & $1.72^{\rm +0.03}_{-0.02}$ & $79^{\rm +31}_{-30}$ & 728.8/708 & 746.2/710 & \B 99.976\\ 
\hline
\multicolumn{11}{c}{\T zbin: 0.3--0.4 \B}\\ 
\hline
\T 0.34 & 4.79 & 0.34 & 37(5) & 15~594 & $43.76^{\rm +0.03}_{-0.09}$ & $1.82^{\rm +0.05}_{-0.03}$ & $69^{\rm +49}_{-49}$ & 439.6/477 & 444.8/479 & \B 94.026\\ 
\hline
\multicolumn{11}{c}{\T zbin: 0.4--0.6 \B}\\ 
\hline
\T 0.47 & 4.37 & 0.54 & 23(2) & 7099 & $43.59^{\rm +0.04}_{-0.17}$ & $1.71^{\rm +0.08}_{-0.06}$ & $144^{\rm +95}_{-93}$ & 281.5/274 & 287.7/276 & \B 94.933\\
0.51 & 4.24 & 0.48 & 24 & 17~250 & $44.41^{\rm +0.04}_{-0.06}$ & $1.74^{\rm +0.04}_{-0.06}$ & $<$98 & 475.3/485 & 479.4/487 & \B 87.255\\ 
\hline
\multicolumn{11}{c}{\T zbin: 0.6--0.8\B}\\ 
\hline
\T 0.68 & 3.80 & 0.40 & 30(4) & 9296 & $43.88^{\rm +0.04}_{-0.13}$ & $1.90^{\rm +0.07}_{-0.07}$ & $163^{\rm +87}_{-96}$ & 297.8/330 & 305.7/332 & \B 98.672\\
0.68 & 3.81 & 0.40 & 30(3) & 26~254 & $44.67^{\rm +0.02}_{-0.05}$ & $1.83^{\rm +0.03}_{-0.03}$ & $93^{\rm +39}_{-39}$ & 602.3/561 & 616.9/563 & \B 99.881\\ 
\hline
\multicolumn{11}{c}{\T zbin: 0.8--1.0 \B}\\ 
\hline
\T 0.89 & 3.39 & 0.33 & 17 & 7142 & $44.17^{\rm +0.03}_{-0.12}$ & $1.90^{\rm +0.09}_{-0.07}$ & $<$223 & 254.1/262 & 258.4/264 & \B 88.928\\
0.91 & 3.36 & 0.32 & 16 & 7360 & $44.69^{\rm +0.03}_{-0.10}$ & $1.88^{\rm +0.06}_{-0.06}$ & $<$135 & 263.8/264 & 265.1/266 & \B 47.559\\ 
\hline
\multicolumn{11}{c}{\T zbin: 1.0--1.3 \B}\\ 
\hline
\T 1.16 & 2.97 & 0.38 & 30 & 12~833 & $44.45^{\rm +0.02}_{-0.08}$ & $2.06^{\rm +0.08}_{-0.05}$ & $<$183 & 325.9/354 & 329.8/356 &\B 88.076\\
1.18 & 2.94 & 0.36 & 30 & 17~430 & $45.02^{\rm +0.02}_{-0.05}$ & $1.85^{\rm +0.05}_{-0.04}$ & $<$51 & 423.0/417 & 423.0/418 & \B 5.595\\ 
\hline
\multicolumn{11}{c}{\T zbin: 1.3--1.7 \B}\\ 
\hline
\T 1.44 & 2.63 & 0.38 & 27 & 12~255 & $44.51^{\rm +0.04}_{-0.07}$ & $1.99^{\rm +0.13}_{-0.10}$ & $<$174  & 358.9/352 & 361.5/354 &\B 71.753\\
1.46 & 2.60 & 0.38 & 25 & 23~180 & $45.31^{\rm +0.02}_{-0.04}$ & $1.89^{\rm +0.07}_{-0.04}$ & $<$110 & 468.6/441 & 473.4/443 & \B 89.606\\ 
\hline
\multicolumn{11}{c}{\T zbin: 1.7--2.1 \B}\\ 
\hline
\T 1.89 & 2.22 & 0.23 & 12 & 5401 & $45.03^{\rm +0.04}_{-0.10}$ & $1.69^{\rm +0.17}_{-0.08}$ & $<$193 & 199.1/200 & 201.9/201 & \B 90.608\\ 
\hline
\multicolumn{11}{c}{\T zbin: 2.1--2.5 \B}\\ 
\hline
\T 2.22 & 1.99 & 0.18 & 15 & 9352 & $45.38^{\rm +0.04}_{-0.05}$ & $1.92^{\rm +0.14}_{-0.12}$ & $<$48 & 291.2/279 & 291.2/280 & \B 0.000\\ 
\hline
\multicolumn{11}{c}{\T zbin: 2.5--3.0 \B}\\ 
\hline
\T 2.88 & 1.65 & 0.16 & 6 & 5098 & $45.56^{\rm +0.04}_{-0.06}$ & $2.00^{\rm +0.20}_{-0.13}$ & $<$115  & 177.5/190 & 178.0/191 & \B 50.559\\
\hline
% 2.86 & 1.66 & 0.09 & 2 & 11~561 & $46.61^{\rm +0.03}_{-0.03}$ & $1.76^{\rm +0.14}_{-0.08}$ & -- & 326.0/305 & 325.8/306 & \B 0.000\\ 
\hline
\multicolumn{11}{c}{\T zbin: 3.0--4.0 \B}\\ 
\hline
\T 3.31 & 1.49 & 0.25 & 4 & 6717 & $46.18^{\rm +0.04}_{-0.05}$ & $1.66^{\rm +0.16}_{-0.14}$ & $<$106  & 224.9/222 & 225.6/223  & \B 59.089\\ 
\hline
\multicolumn{11}{c}{\T zbin: 4.0--5.0 \B}\\ 
\hline
\T 4.31 & 1.21 & 0.14 & 9 & 12~611 & $46.32^{\rm +0.03}_{-0.03}$ & $1.76^{\rm +0.13}_{-0.11}$ & $<$83  & 275.2/284 & 276.5/285 & \B 74.598\\ 
\hline
\end{tabular}} 
\tablefoot{Column~(1): median redshift of the bin;
 Col. (2): expected energy of the neutral Fe~K$\alpha$ line;
 Col. (3): observed frame bin width at the 6.4~keV position, defined as $\triangle E= 6.4/1+z_{\min}{-}6.4/1+z_{\max}$. Comparatively large bin widths in the redshift bin 0.0--0.2 are due to the variation in $z_{\min}$ and $z_{\max}$ introduced by splitting the sources in different luminosity bins; 
 Col. (4): total number of stacked sources in different luminosity bins in each redshift bin (in parenthesis number of sources with significant Fe~K$\alpha$ line);
 Col. (5): total net counts in the rest frame 2--10~keV band;
 Col. (6): rest frame X-ray luminosity measured in the 2--10~keV band;
 Col. (7): power law photon index quoted over the 2--10~keV band; errors are reported at the 90\% confidence level for one interesting parameter;
 Col. (8): rest frame equivalent width of the Fe~K$\alpha$ line;
 Col. (9): $\chi^2$ and degrees of freedom using a single absorbed powerlaw and a redshifted narrow Gaussian line;
 Col. (10): $\chi^2$ and degrees of freedom using a single absorbed powerlaw;
 Col. (11): the $F$-test probability of the line detection, for $F$-prob~$\leq$~90\% the upper limits on the EW are quoted at the 90\% confidence level.}
\end{table}