\begin{table}%t2
\caption{\label{assorbanze}Band strength values (\emph{A}) for the most intense features of frozen methyl formate deposited at 16~K on two different substrates (Si~and~KBr). }
%%\centering

\par
\begin{tabular}{ccc}
\hline\hline \noalign{\smallskip}
   Band position (cm$^{-1}$)&\multicolumn{2}{c}{\emph{A} (cm molecule$^{-1}$)}\\
   Substrate & Si & KBr \\
   \hline \noalign{\smallskip}
   1720 & $4.77\times10^{-17}$  &  $4.96\times10^{-17}$   \\
   1435 & $4.94\times10^{-18}$  &  $5.58\times10^{-18}$   \\
   1164 & $1.62\times10^{-17}$  &  $1.96\times10^{-17}$   \\
   1210 & $2.80\times10^{-17}$  &  $2.93\times10^{-17}$   \\
   910  & $3.79\times10^{-18}$  &  $4.82\times10^{-18}$   \\
   768  & $1.01\times10^{-18}$  &  $1.25\times10^{-18}$   \\	                
   \hline
   \end{tabular}
 \end{table}