\begin{table}%t4
   %\centering
\par
       \caption{As Table~\ref{table2} for the automatic method (without the
       height correction). $n=1500$.
        \label{table4}}
          \begin{tabular}{llll}
        \noalign{\smallskip}
             \hline\hline
             \noalign{\smallskip}
$A \pm M_A$        & $-B \pm M_B$    & $-C \pm M_C$    & Remark    \\
             \noalign{\smallskip}
             \hline
             \noalign{\smallskip}
14.530 $\pm$ 0.032 & 2.68 $\pm$ 0.13 & 0               & $C=0$     \\
14.460 $\pm$ 0.042 & 1.79 $\pm$ 0.36 & 1.38 $\pm$ 0.52 & $B \ne C$ \\
14.446 $\pm$ 0.029 & 1.63 $\pm$ 0.08 & 1.63 $\pm$ 0.08 & $B=C$     \\
             \hline
        \end{tabular}
   \end{table}