\begin{table}%t4
\caption{Water production rate for a non-spherical nucleus.}
\label{Table_non_spherical}
%\centerline
{
\begin{tabular}{p{2cm}cccc}
\hline
\hline
$a/b$      &$a$  &$b=c$  &$(Q_{{\rm H}_2{\rm O}})_{\rm min}^{\dag}$ &$(Q_{{\rm H}_2{\rm O}})_{\rm max}^{\dag}$\\
        &(m)     &(m) &\multicolumn{2}{c}{(10$^{28}$ mol s$^{-1}$)}\\
\hline
1.0     &600    &600    &1.00   &1.00\\
1.2     &686    &572    &0.90   &1.10\\
1.5     &805    &537    &0.78   &1.22\\
2.0     &980    &490    &0.60   &1.38\\
\hline
\end{tabular}}
\medskip
$\rm ^{\dag}$ The water production rates are normalized to the water production rate of the spherical case.
\end{table}