\begin{table}%T2
\par
\caption{\label{table-bias}Biases in the size determination.}
\small
%\centerline
{
\begin{tabular}{cc|c}
\hline\hline 
$\xi$$^a$
& Absorption$^b$
 & $R/X_{\rm OCP}$$^c$ \\
 \hline
0.35 & YES & 0.975 \\
0.30 & YES & 0.970 \\
0.25 & YES & 0.961 \\
\hline
0.35 & NO & 1.012 \\
0.30 & NO & 0.995 \\
0.25 & NO & 0.977 \\
\hline
\end{tabular}}
\smallskip
$^a$ {$\xi$ refers to the shell width in units of the source
radius (fractional shell width) of the model.}\\
 $^b$ {Absorption refers to a blockage of all the 
emission coming from the part of the shell behind the ejecta (see text).} \\
$^c$ {Ratio of model source size, $R$, to size determined 
with the CPM, $X_{\rm OCP}$.}
\end{table}