\begin{table}%t1
%\centering
\par
\caption{\label{table1}}
\begin{tabular}{lllllllll}
\hline\hline
Surface&$E_{\rm phys}$&$E_{\rm Hp}$&$E_{\rm Dp}$&$E_{\rm chem}$&$E_{\rm S}$&$a_{\rm pc}$&$\nu_{\rm Hp}$&$\nu_{\rm Dp}$\\
Graphite (PAHs)&800 K&720~K&745~K&7000 K & --2300 K & 1.5 $\AA$&$3\times  10^{12}$&
$2 \times 10^{12}$\\
Para sites (PAHs) &800 K&720~K&745~K&25~000 K& 200 K & 1.5 $\AA$&
$3 \times 10^{12}$& $2\times  10^{12}$\\
Amorphous Carbon&800 K&720~K&745~K&7000 K & 200 K & 3 $\AA$&$3 \times 10^{12}$&
$2 \times 10^{12}$\\
Silicates&700 K&630~K&650~K&15000 K& --1000 K &1.7~$\AA$&$3 \times 10^{12}$&
$2 \times 10^{12}$\\
\hline
\end{tabular}
\end{table}