\begin{table}%t1 
\par
\caption{\label{tab1}Summary of best-fit clustering parameters.}
\small%\centerline
{
\begin{tabular}{lrcccccc}
\hline \hline
Sample& $N^a$& $z$ range& $\bar z^b$& ${\rm log}L_{0.5-10}^c$& $r_0$~~~~~~& $\gamma$& $r_0(\gamma=1.8)$\\
&&&&&[$h^{-1}$~Mpc]&&[$h^{-1}$~Mpc]\\
\hline\noalign{\smallskip}
All AGN           & 538 & 0.2--3.0 & 0.98 & 43.8& $\rm 8.65^{+0.41}_{-0.48} $& $\rm 1.88^{+0.06}_{-0.07}$ & $\rm 8.39^{+0.41}_{-0.39}$ \\
No $z=0.36$ spike   & 496 & 0.2--3.0 & 1.03 & 43.9& $\rm 6.12^{+0.64}_{-0.89} $& $\rm 1.74^{+0.13}_{-0.14}$ & $\rm 6.32^{+0.53}_{-0.49}$ \\
%\noalign{\smallskip}
$z\sim 1$ AGN     & 349 & 0.4--1.6 & 0.94 & 43.7& $\rm 5.17^{+0.80}_{-1.14} $& $\rm 1.72^{+0.17}_{-0.18}$ & $\rm 5.44^{+0.62}_{-0.58}$ \\ 
BLAGN             & 305 & 0.2--3.0 & 1.45 & 44.3& $\rm 7.66^{+0.81}_{-1.04} $& $\rm 1.98^{+0.17}_{-0.18}$ & $\rm 7.03^{+0.96}_{-0.89}$ \\
%\noalign{\smallskip}
non-BLAGN         & 229 & 0.2--1.3 & 0.70 & 43.2& $\rm 7.03^{+0.87}_{-1.18} $& $\rm 1.60^{+0.13}_{-0.14}$ & $\rm 7.75^{+0.62}_{-0.59}$ \\
$\rm HR<-0.2$         & 428 & 0.2--3.0 & 1.15 & 44.0& $\rm 9.56^{+0.42}_{-0.45} $& $\rm 1.98^{+0.08}_{-0.07}$ & $\rm 9.05^{+0.48}_{-0.45}$ \\
${\rm HR}<-0.2,~z<1.3$ & 250 & 0.2--1.3 & 0.79 & 43.5& $\rm 9.96^{+0.48}_{-0.50}$& $\rm 1.93^{+0.07}_{-0.07}$ & $\rm 9.68^{+0.48}_{-0.50}$ \\ 
$\rm HR<-0.2$, no spike& 218 & 0.2--1.3 & 0.79 & 43.5& $\rm 6.72^{+0.72}_{-0.88}$& $\rm 1.87^{+0.18}_{-0.18}$ & $\rm 6.56^{+0.75}_{-0.68}$ \\ 
%\noalign{\smallskip}
$\rm HR\geq-0.2$      & 102 & 0.2--1.3 & 0.73 & 43.4& $\rm 5.07^{+1.58}_{-1.73} $& $\rm 2.38^{+0.85}_{-0.51}$ & $\rm 4.97^{+1.93}_{-1.49}$ \\
$z<1$             & 276 & 0.2--1.0 & 0.68 & 43.3& $\rm 7.97^{+0.48}_{-0.52} $& $\rm 1.80^{+0.08}_{-0.08}$ & $\rm 7.97^{+0.43}_{-0.41}$ \\
$z<1$ no spike    & 234 & 0.2--1.0 & 0.73 & 43.4& $\rm 5.16^{+0.71}_{-0.99} $& $\rm 1.81^{+0.20}_{-0.21}$ & $\rm 5.14^{+0.66}_{-0.61}$ \\
$z>1$             & 262 & 1.0--3.0 & 1.53 & 44.3& $\rm 6.68^{+1.19}_{-1.98} $& $\rm 1.86^{+0.27}_{-0.30}$ & $\rm 6.40^{+0.94}_{-0.86}$ \\
\hline		 	      			   
\end{tabular}}
\smallskip
$^a$ Number of objects in each sample. $^b$ Median redshift. $^c$ Median
X-ray luminosity in the 0.5$-$10~keV band in units of erg~s$^{-1}$. Errors are $1\sigma$~Poisson confidence levels. Bootstrap
errors are a factor of $\sim$2~larger.
\end{table}