\begin{table}%t1
\caption{\label{crit}Spectral classification breakdown.}
\small%\centerline
 {
  \begin{tabular}{c| c c c c c| c}
    \hline \hline
    &&&&&& \\[-8pt]
     Method &HEG & HEG/BLO & LEG & ELEG &  SF & Total\\
    \hline
    {EI}    &27  &   14  &   32  &    2 &  --  &  75 \\
    D.D.    & 3  &   --  &    2  &    1 &   1  &   7 \\
    O.R.    &--  &    2  &    3  &   -- &  --  &   5 \\
    \hline                  
    Total   &30  &   16  &   37  &    3 &   1  &  87 \\
    \hline
  \end{tabular}}
  \medskip
Classification method: {EI}~-- excitation index; D.D.~-- diagnostic diagrams; O.R.~-- emission line-radio correlation. 
\vspace*{5mm}
\end{table}