\begin{table}%t12
\caption{\label{tab:phshpol}Examples  of  phase-shifts  (in  degrees) measured in  the two  polarization states~(P1,~P2), for the  6~beam pairs. Statistical errors are of~1$^\circ$.}
%\centering
\small
\begin{tabular}{c|c c c c c c}
\hline
\hline
Beam Pair & [12] & [13]  & [14] &[24] & [23] & [34]\\
\hline
P1 & 62 & 87 & 34 & 67 & 77 & 88 \\
P2 & 55 & 80 & 37 & 62 & 70 & 77 \\
\hline
\end{tabular}
\end{table}