\begin{table}%t4
\caption{8--20 keV AGN luminosity function parameters.}\label{lumfunc_8_20_table}
%\centerline
{
\begin{tabular}{lllllllllr}
\hline
\hline
\multicolumn{1}{c}{Sample} &
\multicolumn{1}{c}{$\log L_{3-20}$} &
\multicolumn{1}{c}{Size} &
\multicolumn{1}{c}{$\log L_\ast$$^{a}$} &
\multicolumn{1}{c}{$\gamma_1$} &
\multicolumn{1}{c}{$\gamma_2$} & 
\multicolumn{1}{c}{$A$} & 
\multicolumn{1}{c}{$W_{8-20}({>}41)$} & 
\multicolumn{1}{c}{$N_{8-20}({>}41)$} &
\multicolumn{1}{c}{$P_{\rm KS}$} \\
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{erg s$^{-1}$} &
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{erg s$^{-1}$} &
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{Mpc$^{-3}$} &
\multicolumn{1}{c}{10$^{38}$ erg s$^{-1}$ Mpc$^{-3}$} &
\multicolumn{1}{c}{10$^{-4}$ Mpc$^{-3}$} &
\multicolumn{1}{c}{} \\
\hline
Total & 40.5--44.5 & 37 & $\rm 42.82_{-0.50}^{+0.52}$ & $\rm 0.66_{-0.42}^{+0.32}$ & 
$\rm 1.98_{-0.28}^{+0.36}$ & 
$4.6(5.3)\times 10^{-6}$ & $\rm 3.6_{-0.6}^{+0.8}$ ($\rm 4.3_{-0.7}^{+1.0}$) & 
$\rm 10_{-5}^{+10}$ ($\rm 12_{-6}^{+12}$) & $>$$0.9$\\
\hline
\end{tabular}}

$^{a}$ All presented uncertainties are 1$\sigma$.
\end{table}