\begin{table}%t3
\caption{Space densities of soft X-ray active stars derived from the RASS.}\label{rass_info}
%\centering
\par
\begin{tabular}{crrcrcc}
\hline
\hline
\multicolumn{1}{c}{$\log\lxs$} &
\multicolumn{1}{c}{$D$} &
\multicolumn{2}{c}{All stars} &
\multicolumn{2}{c}{ABs} &
\multicolumn{1}{c}{Catalog}
\\   
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{pc} &
\multicolumn{1}{c}{Number} &
\multicolumn{1}{c}{Density, pc$^{-3}$} &
\multicolumn{1}{c}{Number} &
\multicolumn{1}{c}{Density, pc$^{-3}$} &
\multicolumn{1}{c}{} 
\\
\hline
31.0--31.5 & 50 &   7 & $(1.3\pm 0.5)\times 10^{-5}$ &  6 & 
$(1.1\pm 0.5)\times 10^{-5}$ & M03 \\   
30.5--31.0 & 50 &  18 & $(3.4\pm 0.8)\times 10^{-5}$ & 12 &
$(2.3\pm 0.7)\times 10^{-5}$ & M03 \\   
30.0--30.5 & 50 &  73 & $(1.5\pm 0.2)\times 10^{-4}$ & 24 &
$(4.6\pm 0.9)\times 10^{-5}$ & M03 \\   
29.5--30.0 & 25 &  31 & $(4.7\pm 0.9)\times 10^{-4}$ &  9 &
$(1.4\pm 0.5)\times 10^{-4}$ & H99 \\ 
 ...       & 15 &     &                              &  3 &
$(2.1\pm 1.2)\times 10^{-4}$ & H99 \\ 
29.0--29.5 & 25 &  96 & $(1.5\pm 0.2)\times 10^{-3}$ & 11 &
$(1.7\pm 0.5)\times 10^{-4}$ & H99 \\ 
 ...       & 15 &     &                              &  7 &
$(5.0\pm 1.9)\times 10^{-4}$ & H99 \\
28.5--29.0 & 25 & 131 & $(2.0\pm 0.2)\times 10^{-3}$ &  5 &
$(8.0\pm 3.0)\times 10^{-5}$ & H99 \\ 
 ...       & 15 &     &                              &  3 &
$(2.1\pm 1.2)\times 10^{-4}$ & H99 \\ 
28.0--28.5 & 20 & 132 & $(3.9\pm 0.3)\times 10^{-3}$ &    &
                             & H99 \\ 
27.5--28.0 & 11 &  48 & $(8.6\pm 1.2)\times 10^{-3}$ &    &
                             & H99 \\ 
27.0--27.5 &  6 &  18 & $(2.0\pm 0.5)\times 10^{-2}$ &    &
                             & H99 \\ 
\hline             
\end{tabular}
\end{table}