\begin{table}%t4
\caption{The $\beta$-model fitting results in different
directions.}\label{fit_beta_direction}
%\centering
\par
\small
\begin{tabular}{l l l l  }
\hline
 \hline\noalign{\smallskip}
 direction & $\beta$-fit & $r_{\rm c}$(Mpc) & $\chi^{2}_{\rm reduced}$\\
\hline
   NE &  0.94 $\pm$ 0.01& 0.35 $\pm$ 0.01& 1.05  \\
   SE&  0.65 $\pm$ 0.01  & 0.18 $\pm$ 0.01 & 1.22 \\
   NW &0.72 $\pm$ 0.01 & 0.25 $\pm$ 0.01& 1.68\\
   SW&0.77 $\pm$ 0.01 & 0.31 $\pm$ 0.02& 2.3\\
\hline
\end{tabular}
\end{table}