\begin{table}%t4
\caption{\label{table4}Velocity dispersion values adopted in the correction of the line-strength indices.}
%\centerline
{
\begin{tabular}{lcccllcccl}
\hline\hline
\multicolumn{1}{l}{Ident.} &
\multicolumn{1}{c}{$\sigma_{r_{\rm e}/8}$} &
\multicolumn{1}{c}{$\sigma_{r_{\rm e}/4}$} &
\multicolumn{1}{c}{$\sigma_{r_{\rm e}/2}$} &
\multicolumn{1}{l}{Ref.} &
\multicolumn{1}{l}{Ident.} &
\multicolumn{1}{c}{$\sigma_{r_{\rm e}/8}$} &
\multicolumn{1}{c}{$\sigma_{r_{\rm e}/4}$} &
\multicolumn{1}{c}{$\sigma_{r_{\rm e}/2}$} &
\multicolumn{1}{l}{Ref.} \\
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{[km~s$^{-1}$]} &
\multicolumn{1}{c}{[km~s$^{-1}$]} &
\multicolumn{1}{c}{[km~s$^{-1}$]} &
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{[km~s$^{-1}$]} &
\multicolumn{1}{c}{[km~s$^{-1}$]} &
\multicolumn{1}{c}{[km~s$^{-1}$]} &
\multicolumn{1}{c}{}\\
\hline
NGC~3607   & 220  & 210  & 195  & CMP00     & NGC~5266  & 199 & 140  &         & CDB93 \\
NGC~3818   & 191  & 165  & 138  &   SP97      & NGC~5638  &  165&  151 &  132 & Dav83 \\
NGC~4374   & 282  & 283  & 236  &  Dav81     & NGC~5812  & 200 & 204 &   172 & B94  \\
NGC~4696   & 254  & 190  &         &  CDB93    & NGC~5813  & 239 & 220 &  220 & CMP00  \\
NGC~4697   & 174  & 148  & 130  & Pink03     & NGC~5831  & 164 & 143 &  124 & Dav83  \\
NGC~5011   & 249  & 220  & 200  & CDB93     & NGC~5898  & 220 & 183 &  172 & CMP00  \\
NGC~5044   & 239  & 220  &         & CMP00     & NGC~6758  & 242 & 210 &  205 &  CMP00        \\
NGC~5077   & 260  & 239  & 228  &CMP00      & NGC~6776  & 242 & 214 &  207 &  L98 \\
NGC~5090   & 269  & 250  &         & CDB93     &                    &        &        &         &   \\
NGC~5193   & 209  &         &         &                 &                   &        &         &        &          \\
\hline
\end{tabular}}
\smallskip
  Notes:  the average central value, obtained from the on-line compilation
HYPERCAT ({\tt http://www-obs.univ-lyon1.fr/hypercat/}), is adopted for
$\sigma_{r_{\rm e}/8}$. At larger radii,  $\sigma_{r_{\rm e}/4}$ and
$\sigma_{r_{\rm e}/2}$ are obtained from the references
quoted in Cols.~5 and~10. Legend: 
B94 = Bertin et~al.  (\cite{B94}); 
CDB93 = Carollo et~al. (\cite{CDB93}); 
CMP00 = Caon et~al. (\cite{CMP00}); 
Dav81 = Davies (\cite{Davies81});
Dav83 = Davies et~al. (\cite{Davies83});
L98 = Longhetti et~al. (\cite{L98b}); 
Pink03 =  Pinkney et~al. (\cite{Pink03});
SP97 = Simien \& Prugniel (\cite{SP97}).
\end{table}