\begin{table}%T5
\caption{ \label{table_vis_etaboo} \object{$\eta$ Boo} squared visibilities.}
%\centering
\par
\begin{tabular}{ccccccl}
\hline\hline\\[-3.5mm]
Julian Date & Stations & $N$ & $B$ (m) & Az. ($\deg$) & $V^2 \pm {\rm stat} \pm {\rm syst}$ & Calibrators\\
\hline
%-----
2~452~760.684&B3-M0& $131$ & $134.046$ & $64.22$ & $0.3167\pm0.0187\pm0.0119$ &$\alpha$ Crt\\
2~452~760.696&B3-M0& $50$ & $136.318$ & $63.31$ & $0.3227\pm0.0415\pm0.0121$ &$\alpha$ Crt\\
2~452~763.693&B3-M0& $187$ & $137.132$ & $62.88$ & $0.3095\pm0.0092\pm0.0064$ &$\mu$ Vir\\
%-----
\hline
\end{tabular}
\end{table}