\begin{table}%t2
%\centering
\par
\caption{\label{E}The energy parameter $E$ for the different species.}
\small \begin{tabular}{lrr}
\hline\hline
Species & \multicolumn{1}{c}{H} &  \multicolumn{1}{c}{CO} \\
 & \multicolumn{1}{c}{(K)} &  \multicolumn{1}{c}{(K)} \\
\hline
H       &  3    &  32\\
H$_2$   &  3    &  33\\
CO      & 32    &  63\\
HCO     &160    &1600 \\
H$_2$CO &160    &1600\\
H$_3$CO &160    &1600\\
CH$_3$OH&160    &1600\\
\hline
\end{tabular}
\end{table}