\begin{table}%t3
%\centering
\par
\caption{\label{tab_maxbmaxp}Fourier amplitudes and phases of the fits to the maximum 
brightness and maximum phase data.}
\begin{tabular}{ccccc}
\hline \hline
\noalign{\smallskip}
 Frequency & \multicolumn{2}{c}{Max. brightness} & \multicolumn{2}{c}{Max. phase} \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
           & ampl.  &  phase & ampl. & phase  \\ 
\noalign{\smallskip}
\hline
\noalign{\smallskip}
 $f_{\rm m}$  &0.154098 & 4.540907  & 0.069000 & 2.513789\\
 $2f_{\rm m}$ &0.033806 & 5.638383  & 0.020582 & 4.976442\\ 
 $3f_{\rm m}$ &0.006400 & 1.123083  & 0.009215 & 0.602859\\ 
 $4f_{\rm m}$ &    --    &     --     & 0.004378 & 2.563744\\ 
 $5f_{\rm m}$ &    --    &     --     & 0.002645 & 4.367358\\ 
\hline
\end{tabular}
\end{table}