\begin{table}%t1
         \caption{K20 relevant numbers.
         \label{tabnum}}
     $$ 
         \begin{tabular}{lrrr}
            \hline\hline
            \noalign{\smallskip}
            & Total &  CDFS & Q0055 \\
            \noalign{\smallskip}
            \hline
            \noalign{\smallskip}
            Full sample   & 545 & 347 & 198 \\
	    Observed      & 525 & 336 & 189 \\
	    Identified    & 501 & 325 & 176 \\
	    Stars         & ~45 & ~36 & ~~9 \\
	    AGN (type~1)  & ~12 & ~~8 & ~~4 \\
            Galaxies      & 444 & 281 & 163 \\
	    Galaxies with $zq=1^{{a}}$& 412 & 264 & 148 \\
	    Galaxies with $zq=1$ and $z\leq1.6$& 402 & 256 & 146 \\
             \noalign{\smallskip}
            \hline
         \end{tabular}
     $$ 
\begin{list}{}{}
\item[$^{{a}}$]$zq$ stands for "$z$-quality'':
galaxies with secure redshifts have \hbox{$zq=1$}.
\end{list}
   \end{table}