\begin{table}%t3
%\centering
\par
\caption{\label{Table3}Upper limits for possible minor components of the surface of 2003~EL$_{61}$.}
\small \begin{tabular}{c c c c}
\hline \hline
Species & Upper limit  &  Species & Upper limit \\
\hline
NH$_3$ &	5\%   & serpentine & 7\% \\ 
poly-HCN & 5\% & kaolinite & 4\% \\ 
CH$_4$ & 5\% & orthopyroxene & 7\% \\ 
CO$_2$ & 6\% & olivine & 5\% \\ 
NH$_4$OH & 8\% &\\ 
\hline
\end{tabular}
\end{table}