\begin{table}%t2
         \caption{Number of galaxies belonging to the different spectroscopic
      classes.      \label{tabcls}}
     $$ 
         \begin{tabular}{lrrr}
            \hline\hline
            \noalign{\smallskip}
            & Total &  CDFS & Q0055 \\
            \noalign{\smallskip}
            \hline
            \noalign{\smallskip}
	    AGN (type~1)                & ~12 & ~~8 & ~~4 \\
	    early-type Galaxies         & ~93 & ~61 & ~32 \\
	    blue Emission-Line Galaxies & 246 & 156 & ~90 \\
	    red Emission-Line Galaxies  & ~45 & ~26 & ~19 \\
	    "Outliers''                & ~18 & ~13 & ~~5 \\
             \noalign{\smallskip}
            \hline
         \end{tabular}
     $$ 
   \end{table}