\begin{table}%t1
\caption{Peak position of the OH dangling bond features. In a~few instances the two- and three-coordinate peaks merge into one broad \mbox{feature}.}\label{dbpeak}
\small%\centerline
{
\begin{tabular}{lcc}
\hline
\hline
sample & OH db peak positions & Ref. \\
   & (cm$^{-1}$) & \\
\hline
pure \wat & 3695, 3720 & 1, 2\\
\wat:\nn\ & 3672, 3694 & 1, 3\\
\wat:\oo\ & 3669, 3694 & 2\\
\wat:H$_2$O$_2$ & 3664 & 2\\
\wat:\coo\ & 3657 & 2\\
\wat:CO & 3636 & 2\\
\wat:\met\ & 3669, 3684 & 2\\
\wat:SO$_2$ & 3676 & 2\\
\hline
\end{tabular}}
\medskip
1. Rowland et~al. (\cite{row91}); 2. this work; 3. Palumbo \& Strazzulla (\cite{palu03}).
\end{table}