\begin{table}%t13
%%\centering

\par
\caption{\label{Acceptable gas phase fractional abundance ranges for complex molecules}Acceptable gas phase fractional abundance ranges for complex molecules.}
\begin{tabular}{lll} 
\hline \hline \noalign{\smallskip}
Molecule      & Minimum   & Maximum \\ 
              & abundance & abundance \\
\hline\noalign{\smallskip}
CH$_3$OH      & $5.0 \times 10^{-8}$   & $2.0 \times 10^{-6}$ \\
CH$_3$OCH$_3$ & $8.0 \times 10^{-9}$   & $7.4 \times 10^{-7}$ \\
\hline
\end{tabular}
\end{table}