\begin{table}%T6
\par
    \caption{Central star continua from model and observation.}\label{tab-6}
  %\centerline
{
  \begin{tabular}{lcc}
  \hline
  \hline
  Wavelength & Model       & Observation  \\
   (\AA)     & $\nu~f_{\nu}$ & $\nu~f_{\nu}$  \\
  \hline
  1900       & 2.5e-11  & 3.4e-11 \\
  2117       & 1.8e-11  & 3.1e-11  \\
  2545       & 1.1e-11  & 1.5e-11  \\
  3317       & 4.8e-12  & 6.6e-12  \\
  4283       & 2.2e-12  & 3.2e-12 \\
  5446       & 1.1e-12  & 1.5e-12 \\
  \hline
  \end{tabular}}
\par
 \medskip
  The continua are in units of erg~cm$^{-2}~\rm s^{-1}$.
  \end{table}