\begin{table}%t4
  \caption{Clustering length and slope of the correlation function \wprp\ for
    the different samples in the redshift range $z=[0.5$--1.2]. Values are
    derived for $0.2\le r_{\rm p}\le 21~h^{-1}$~Mpc. Associated errors
    have been extrapolated from the variance measured among 40 mocks
    catalogues for each stellar mass range. Values have not been corrected by
    underestimate due to stellar mass incompleteness.
  } 
  \label{tab:measurement}
%
  %%\centering
\par
  \small
  \begin{tabular}{c c c c}
    \hline\hline 
    Sample &    $\log~(M/M_\odot)$     & \ro   ($h^{-1}$ Mpc)     & \gam \\
    \hline 
    D1     &    9.0--9.5  &  $\rm 2.55_{-0.25}^{+0.25}$   &   $\rm 1.65_{-0.12}^{+0.13}$ \\
    D2     &    9.5--10.0  &  $\rm 3.45_{-0.31}^{+0.32}$   &   $\rm 1.79_{-0.14}^{+0.14}$ \\
    D3     &       10.0 --10.5  &  $\rm 3.54_{-0.34}^{+0.33}$   &   $\rm 1.88_{-0.15}^{+0.16}$ \\
    D4     &       10.5--11.0  &  $\rm 4.35_{-0.47}^{+0.46}$   &   $\rm 1.96_{-0.24}^{+0.27}$ \\
    \hline
    I1     &    $\ge$9.0           &  $\rm 2.76_{-0.15}^{+0.17}$   &   $\rm 1.67_{-0.07}^{+0.08}$ \\
    I2     &    $\ge$9.5           &  $\rm 3.24_{-0.20}^{+0.21}$   &   $\rm 1.77_{-0.08}^{+0.09}$ \\
    I3     &    $\ge$10.0            &  $\rm 3.72_{-0.27}^{+0.29}$   &   $\rm 1.88_{-0.12}^{+0.12}$ \\
    I4     &    $\ge$10.5            &  $\rm 4.28_{-0.45}^{+0.43}$   &   $\rm 2.28_{-0.27}^{+0.28}$ \\
    \hline
  \end{tabular}
\end{table}