\begin{table}%t15
%%\centering

\par
\caption{\label{Other molecule abundances - gas phase}Other molecule abundances -- gas phase.}
\begin{tabular}{lllllll} 
\hline \hline \noalign{\smallskip}
& \multicolumn{6}{c}{Abundance w.r.t. H + H$_2$} \\
&
\multicolumn{2}{c}{H$_2$CO} & 
\multicolumn{2}{c}{HCOOCH$_3$} &
\multicolumn{2}{c}{CH$_3$CN} \\ 
\hline
& Plateau point & Plateau point& Plateau point & Plateau point& Plateau point & Plateau point \\
& & +$2.0 \times 10^5$~yrs & & +$2.0 \times 10^5$~yrs & & +$2.0 \times 10^5$~yrs \\
\hline\noalign{\smallskip}
Model 1 & 2.95 $\times 10^{-07}$ & 2.05 $\times 10^{-08}$ & 4.83 $\times 10^{-11}$ & 1.52 $\times 10^{-09}$ & 4.20 $\times 10^{-09}$ & 1.92 $\times 10^{-07}$ \\ 
Model 2 & 4.37 $\times 10^{-07}$ & 1.77 $\times 10^{-06}$ & 6.12 $\times 10^{-11}$ & 2.19 $\times 10^{-08}$ & 2.44 $\times 10^{-09}$ & 2.85 $\times 10^{-08}$ \\
Model 3 & 3.88 $\times 10^{-07}$ & 2.23 $\times 10^{-08}$ & 5.57 $\times 10^{-11}$ & 2.68 $\times 10^{-09}$ & 2.56 $\times 10^{-09}$ & 1.53 $\times 10^{-07}$ \\ 
Model 4 & 8.56 $\times 10^{-07}$ & 4.62 $\times 10^{-06}$ & 4.90 $\times 10^{-10}$ & 1.33 $\times 10^{-08}$ & 1.64 $\times 10^{-09}$ & 1.61 $\times 10^{-09}$ \\
Model 5 & 5.32 $\times 10^{-07}$ & 4.52 $\times 10^{-07}$ & 3.60 $\times 10^{-10}$ & 7.18 $\times 10^{-11}$ & 4.05 $\times 10^{-10}$ & 5.05 $\times 10^{-13}$ \\
Model 6 & 2.00 $\times 10^{-06}$ & 1.52 $\times 10^{-08}$ & 1.67 $\times 10^{-09}$ & 3.01 $\times 10^{-09}$ & 5.61 $\times 10^{-09}$ & 1.75 $\times 10^{-08}$ \\
Model 7 & 5.01 $\times 10^{-07}$ & 1.61 $\times 10^{-07}$ & 9.06 $\times 10^{-10}$ & 5.23 $\times 10^{-11}$ & 2.34 $\times 10^{-09}$ & 2.12 $\times 10^{-13}$ \\
Model 8 & 6.70 $\times 10^{-07}$ & 2.61 $\times 10^{-08}$ & 2.78 $\times 10^{-09}$ & 6.82 $\times 10^{-12}$ & 2.58 $\times 10^{-10}$ & 1.38 $\times 10^{-14}$ \\ 
\hline
\end{tabular}
\vspace*{3mm}
\end{table}