\begin{table}%t1
%\centering
\par
\caption{Details of the VINCI measurements. The uncertainty on the phase determination equals $\pm0.002$.
 \label{Observational_data}}
\begin{tabular}{l r r r r r }
\hline\hline
Date & Julian Date &Phase&$V^2$ &$\sigma_{V^2}$&$N_s$\\ 
 & $-$2~452~700 & & $\%$ & $\%$ & \\ \hline
21 Apr. 03 & 50.628 &0.937 &57.40&3.60&383\\
 &50.633&0.937 &54.20&3.60&298\\
 & 50.639 &0.937 &54.00&3.50&311\\ \hline
03 May 03 & 62.498 &0.200 &27.54&0.66&96\\
 &  62.502&0.200 &34.03&0.70&393\\
 &  62.507&0.201 &43.40&2.20&260\\
 &  62.512&0.201 &42.20&5.07&68\\
 &62.542&0.201 &13.37&0.45&80\\
 &62.545 &0.201 &8.47&0.58&122\\
 &62.554&0.202 &5.06&0.17&356\\
 &62.562&0.202 &15.32&0.33&416\\ \hline
10 May 03 & 69.551 &0.357 &44.30&1.80&435\\
 &69.556&0.357 &52.20&2.00&446\\
 & 69.561&0.357&56.40&2.10&455\\ \hline
11 May 03 & 70.492&0.377&8.30&0.45&258\\
 & 70.506& 0.378&2.92&0.40&116\\
 & 70.519& 0.378&1.30&1.40&45\\   
\hline
\end{tabular}
\end{table}