\begin{table}%t9
\caption{Values for the ionising flux impinging upon the clouds, electron density and
ionised and molecular gas pressures. The ionised gas pressure is derived from the NVSS
20~cm data and the molecular pressure from the $^{13}$CO~linewidth.}\label{tbl:pressure}
%\centering
\par
\begin{tabular}{lcccc}
\hline  \hline
Cloud & Ionising flux & Electron density  & Ionised pressure
& Molecular pressure \\
 & $\Phi$ (cm$^{-2}$ s$^{-1}$) & $n_{\rm e}$ (cm$^{3}$) & $P_{\rm i}/k$ (cm$^{-3}~$K) &
 $P_{\rm m}/k$ (cm$^{-3}~$K) \\
 \hline
SFO 11 & $2.2\times10^{8}$ & 266 & $8.2\times10^{6}$ & $2.5\times10^{6}$\\
SFO 11NE & $3.5\times10^{8}$ & 354 & $1.1\times10^{7}$ & $5.7\times10^{6}$\\
SFO 11E & $8.5\times10^{8}$ & 478 & $1.5\times10^{7}$ & $5.1\times10^{6}$\\\hline
\end{tabular}
\end{table}