\begin{table}%t1
\caption{\label{Table:1}Surface area under the TPD mass spectra of the species
produced in the $^{18}$O + D experiment. The results of a
statistical model are given as a comparison (\textit{see text}).} 
%\centering
\par
\begin{tabular}{l|cccccc}
  \hline \hline\\[-3mm]
   & Total $^{18}$O & Mass 19 & Mass 20 & Mass 21 & Mass 22 & Mass 23 \\
  \hline
  Area (cps) & $15~000\pm 1000$ & $30~000\pm 200$0 & $10~000\pm 500$ & $1250\pm 150$ & $250\pm 70$ & 20 \\
 % \hline
  Model         & 15~000 & 31~802 & 8076 & 1434 & 188 & 0 \\
  \hline
\end{tabular}
\end{table}