\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}