\begin{table}%t4
\caption{Transit-averaged chromaticity as a function of
re-alignment error.\label{transtab}}
%\centering
\par
\begin{tabular}{ccc}
\hline
\hline
Offset   & Chromaticity Mean & Chromaticity rms \\
(arcsec) &    (${\rm \mu as}$)     &   (${\rm \mu as}$)    \\
\hline
0  &  --0.403 &   0.8218 \\
1  &  --2.599 &  14.1906 \\
5  & --11.277 &  68.3465 \\
10 & --21.892 & 136.5464 \\
30 & --61.998 & 414.4432 \\
\hline
\end{tabular}
\end{table}