\begin{table}%T3
\par
\caption{\label{tab-ratios}Computed ratios $\rho_{1}$ and $\rho_{2}$ (see text) for
different shell emission models.}
\small
%\centerline
{
\begin{tabular}{cc|cc}
\hline\hline 
$\xi$$^a$ & 
Absorption$^b$ & $\rho_{1}$ & $\rho_{2}$ \\
\hline
0.35 & YES & 0.54 & 0.44 \\
0.30 & YES & 0.52 &  0.46 \\
0.25 & YES & 0.52 & 0.47 \\
\hline
0.35 & NO & 0.80 & 0.37 \\
0.30 & NO & 0.78 & 0.39 \\
0.25 & NO & 0.75 & 0.41 \\
\hline
\end{tabular}}
\smallskip
 $^a$ {Defined in Table~\ref{table-bias}.}\\
 $^b$ {Defined in Table~\ref{table-bias}.}
\end{table}