\begin{table}%t1
\caption{\label{Ratio}The number of objects distributed in the regions~I and~II.}
\small%\centerline
 {
\begin{tabular}{crrrrrr}
\hline \hline \noalign{\smallskip}
Redshift & \multicolumn{3}{c}{QA catalogue} & \multicolumn{3}{c}{SQ catalogue} \\ 
range & \multicolumn{3}{c}{-----------------------------------} & \multicolumn{3}{c}{-----------------------------------} \\ 
& region I & region II & total & region I & region II & total \\ 
\hline
$0 \leq z \leq 1$ & 1671 (27) & 4480 (73) & 6151 & 222 (11) & 1869 (89) & 2091 \\
$1 < z \leq 2$ & 238 (47) & 265 (53) & 503 & 222 (47) & 249 (53) & 471 \\
$2 < z \leq 3$ & 67 (25) & 197 (75) & 264 & 38 (19) & 165 (81) & 203 \\
$3 < z \leq 4$ & 7 (16) & 36 (84) & 43 & 9 (18) & 41 (82) & 50 \\
$4 < z \leq 5$ & 5 (71) & 2 (29) & 7 & 1 (50) & 1 (50) & 2 \\ 
\hline
Total & 1998 (29) & 4970 (71) & 6968 & 500 (18) & 2317 (82) & 2817 \\ 
\hline
\end{tabular}}
\medskip
Of 7061 AGNs detected in the QA catalogue, 93~do not have a measured redshift. The values in parentheses represent percentages of quasars/AGNs residing in each region.
\end{table}