\begin{table}%t3
\caption{Gas phase abundances relative to H nuclei.}
\label{elements_S140}
%\centering
\small
\begin{tabular}{l l}
\hline \hline
Element & Relative abundance\\
\hline
& \\[-8pt]
\element{He} & $1.0 \times 10^{-1} $ \\  
\element{C} & $2.0 \times 10^{-4} $ \\
\element{O} & $5.0 \times 10^{-4} $ \\
\element{N} & $7.5 \times 10^{-5} $ \\
\element{S} & $1.3 \times 10^{-6} $ \\
\element{Fe} & $2.5 \times 10^{-7} $ \\
\hline
\end{tabular}
\end{table}