\begin{table}%T7
\caption{The types of chemical reactions present and their count in 
the database, together with the number for which experimental data is available.  
The first column gives the abbreviation used for the types.}
 \label{tab:cat}
\par
%\centering
\small
\begin{tabular}{clrr}
\hline \hline
\noalign{\smallskip}
 &Reaction type& Count & Measured \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
NN & Neutral--Neutral                       & 549  & 275 \\
IN & Ion--Neutral                           & 2387 & 956 \\
CE & Charge Exchange                         & 552  & 201 \\
II & Atomic Ion--Ion Neutralisation         & 31   & 0   \\
DR & Dissociative Recombination              & 486  & 95  \\
RR & Radiative Recombination                 & 25   & 0   \\
AD & Associative Detachment                  & 47   & 1   \\
RA & Radiative Association                   & 91   & 17  \\
PH & Photoprocess                            & 216  & 0   \\
CP & Cosmic-Ray Proton {\scriptsize(CRP)}    & 11   & 0   \\
CR & Cosmic-Ray Photon {\scriptsize(CRPHOT)} & 156  & 0   \\
CD & Collisional Dissociation                & 16   & 2   \\
CI & Chemi-ionisation                        & 1    & 0   \\
IM & Ion--Molecular Ion Neutralisation      & 5    & 0   \\
CL & Collider                                & 32   & 11  \\
\hline
\end{tabular}
\end{table}