\begin{table}%t4
\caption{\label{table:4}Supplementary data reduction values.}             
\small      
%\centering
\par
\begin{tabular}{c c c c c c c c }     
\hline\hline   \noalign{\smallskip} 
&&\multicolumn{2}{c}{Planet angular separation} & \multicolumn{2}{c}{Planet orbital phase} \\
\par
Data set&& From fit&From metrology&From fit&From metrology&Asymmetry &Planet fit\\
&&&&&&value $\alpha$&correlation\\
&&&&&&&coefficient\\
\hline \noalign{\smallskip}     
6--18&Planet-only&6.30 $\times$ $10^{-7}$ &6.35 $\times$ $10^{-7}$& 6.22& 6.22& --0.145& 0.98\\
&Star-and-planet&6.34 $\times$ $10^{-7}$ &6.34 $\times$ $10^{-7}$ &5.49& 5.47& 0.352& 0.63\\
7--10& Planet-only&6.32 $\times$ $10^{-7}$ &6.35 $\times$ $10^{-7}$ &6.21 &6.20 &0.342 &0.98\\
&Star-and-planet&6.26 $\times$ $10^{-7}$ &6.35 $\times$ $10^{-7}$ &5.86 &5.85 &0.553 &0.73\\
7--23& Planet-only&6.31 $\times$ $10^{-7}$ &6.35 $\times$ $10^{-7}$ &3.10 &3.09 &--0.186 &0.99\\
&Star-and-planet&6.34 $\times$ $10^{-7}$ &6.35 $\times$ $10^{-7}$ &3.03 &3.02 &--0.345 &0.73\\
\noalign{\smallskip}  
&&&(6.35 $\times$ $10^{-7}$ radian $\approx$206~mas) && & &\\
\hline 
\end{tabular}
%\vspace*{4mm}
\end{table}