\begin{table}%t2
\caption{Fitted parameters of Eq.~\eref{e:fitmodel} for the synthetic power spectra
 of the three hydrodynamical models.}
%\centerline
 {\small \begin{tabular}{llll}
\hline\hline\noalign{\smallskip}
Parameter  & \multicolumn{3}{c}{Hydrodynamical models}\\
\mbox{}    & \mohi & \molo & \mosu \\
\noalign{\smallskip}
\hline\noalign{\smallskip}
$b$        & 6.056     & 2.881   & 1.046 \\
$\nu_1$    & 0.9593    & 1.259   & 1.295 \\
$\alpha_1$ & 2.486     & 3.434   & 2.953 \\
$\nu_2$    & 2.383     & 2.821   & 3.667 \\
$\alpha_2$ & 8.061     & 9.278   & 8.035 \\ 
$a_1$      & 0.4130    & 0.5389  & 2.149 \\
$u_1$      & 1.266     & 1.674   & 3.252 \\
$w_1$      & 0.09507   & 0.08464 & 0.02861 \\
$a_2$      & 4.498     & 1.732   & \mbox{}\\
$u_2$      & 1.676     & 2.027   & \mbox{}\\
$w_2$      & 0.01155   & 0.02994 & \mbox{}\\
$a_3$      & 2.188     & 2.142   & \mbox{}\\
$u_3$      & 2.107     & 2.618   & \mbox{}\\
$w_3$      & 0.01217   & 0.004683& \mbox{}\\
\hline
\end{tabular}}
\medskip
Background- and line-amplitudes are  given in ppm$^2$/$\mu$Hz, frequencies in mHz. Missing values for a line  indicate that it was left out since unnecessary to obtain a satisfactory
    fit.  \plabel{t:fitpars}
\end{table}