\begin{table}%t3
\caption{$\chi ^2$ values for the Fourier fit.} \label{tab-chi}
%\centering
\par
\begin{tabular}{lcc}
\hline \hline
 & Up to Order 2 & Up to Order 4\\
\hline
$\chi ^2 _Q$ at 4300~\AA & 7.18 & 4.17\\
$\chi ^2 _U$ at 4300~\AA & 7.04 & 6.85\\
$\chi ^2 _Q$ at 5250~\AA & 3.09 & 3.77\\
$\chi ^2 _U$ at 5250~\AA & 5.06 & 4.05\\
\hline
\end{tabular}
\end{table}