\begin{table}%tb.1
%\centering
\par
\caption{An example table of the catalogue of high probability
members of Alpha Per.\label{ExAP}}
\begin{tabular}{cccccc}
\hline\hline
No.&RA&Dec&$R$&$I$&Membership\\
&&&&&Probability\\
\hline
1 & 2 51 51.84 &+49 1 10.4 &17.55 & 15.66 & 0.8076\\ 
2 & 2 52 0.93 &+48 58 40.6 &16.75 & 15.25 & 0.6804\\ 
3 & 2 53 22.99 &+48 12 22.2 &11.55 & 11.31 & 0.6251\\ 
4 & 2 53 45.30 &+47 26 3.5 &14.49 & 13.76 & 0.6089\\ 
5 & 2 54 12.10 &+47 56 54.8 &15.74 & 14.65 & 0.6006\\ 
\hline
\end{tabular}
\end{table}