\begin{table}%t3
\caption{\label{tab3}\label{HQS_classification} The statistics of the optical counterparts in the BHRC catalogue by classification. For the definition of the subgroups of multiple counterparts, see text.}
%\centering
\par
\begin{tabular}{lrrrrr}
\hline\hline
Classification  & Single   & Multiple    & Multiple & Total & \% \\
              &            & U & A &       &    \\
\hline 
Bright galaxy &   27 &    0 &   6 &   33 &   1.0 \\
Galaxy        &  130 &   74 &  54 &  258 &   8.1 \\
QSO           &  858 &  172 & 138 & 1168 &  36.5 \\
BLL           &   11 &    0 &   5 &   16 &   0.5 \\
AGN~          &  334 &   25 &  83 &  442 &  13.8 \\
Blue galaxy   &  103 &   18 &  54 &  175 &   5.5 \\
HII region    &    2 &    0 &   0 &    2 &   0.1 \\ 
Planet. Neb.  &    1 &    0 &   0 &    1 &   0.0 \\
White dwarf   &   26 &    2 &   4 &   32 &   1.0 \\
CV            &   12 &    0 &   0 &   12 &   0.4 \\
Bright star   &   11 &    0 &   8 &   19 &   0.6 \\
Stars B-A     &   52 &    2 &  20 &   74 &   2.3 \\
Stars F-G     &  429 &   41 & 100 &  570 &  17.8 \\
Star K        &  201 &   30 &  92 &  323 &  10.1 \\ 
Star M        &   46 &    0 &  23 &   69 &   2.2 \\
Star C        &    1 &    0 &   1 &    2 &   0.1 \\
Star:         &    4 &    0 &   2 &    6 &   0.2 \\
\hline                           
All objects   & 2248 &  364 & 590 & 3202 & 100.0 \\
\hline
\end{tabular}
\end{table}