\begin{tabular}{*{3}{l}}
 \hline
                &\multicolumn{2}{c}{M1}   \\
                &Estimate &(S.E.) \\
 \hline
 \hline
  (Intercept)    & -269.01*  &   (95.835) \\
  x1             &  5.308*  &   (1.161) \\
  x2             &  5.094*  &   (1.332) \\
  x3             & -0.371  &   (5.05) \\
  x4             &  10.649  &   (9.45) \\
 \hline 
 N                &150      &       \\
 RMSE            &152.068        & \\
 $R^2$           &0.198        & \\
 adj $R^2$       &0.176        & \\
 \hline
 \hline
 
 \multicolumn{2}{l}{${*}  p \le 0.05$   }\\
 \end{tabular}