\begin{table}%t1
\caption{CCD $VI$ data of stars in the field of NGC~2324.}\label{vi}
%\centerline
{
\begin{tabular}{crrccccc}
\hline\hline
Star & $X$\hspace{0.2cm} &  $Y$\hspace{0.2cm} & $V$  & $\sigma(V)$  & $V-I$ & $\sigma(V-I)$  & $n$ \\
   & (pixel)   & (pixel) &  (mag)  &  (mag)  &  (mag)  &  (mag)  &   \\
\hline
   309 & 984.239 & 253.255 & 16.790 & 0.009 & 1.045 & 0.020 & 3\\
   310 & 444.727 & 253.779 & 17.499 & 0.015 & 1.158 & 0.020 & 3\\
   311 & 617.592 & 254.117 & 17.699 & 0.011 & 0.924 & 0.055 & 3\\
   312 & 708.392 & 255.424 & 18.077 & 0.031 & 0.872 & 0.046 & 3\\
   313 &1142.572 & 256.372 & 18.061 & 0.011 & 0.983 & 0.050 & 3\\
.  & .\hspace{0.5cm} & . \hspace{0.2cm} & .  & . &  .    &    .    &  .  \\
.  & .\hspace{0.5cm} & . \hspace{0.2cm} & .  & . &  .    &    .    &  .  \\
.  & .\hspace{0.5cm} & . \hspace{0.2cm} & .  & . &  .    &    .    &  .  \\
\hline
\end{tabular}}
\medskip
{\sc NOTE:} ($X$, $Y$) coordinates correspond to the reference system of 
Fig.~\ref{fig1}. 
Magnitude and colour errors are the standard deviations of the mean, or the 
observed photometric errors for stars with one \mbox{measurement}.
\end{table}