\begin{table}%t2 \caption{\label{model}Summary of the PDR modelling of the \CII emission for 5 points along the HIFI S-NW cut ($\Delta\alpha = -47\arcsec$).} \small%\centering \par \begin{tabular}{r c c c c c c c c c} \hline\hline\noalign{\smallskip} Pos. ($\Delta\delta$) & $d_{\rm proj}$ & UV field & $T$ & PAH$^+$/PAH$^0$ & Ionization & $N$(H) & \CII\ local emissivity & \multicolumn{2}{c}{\CII flux} \\ & & \tablefootmark{a} & \tablefootmark{b} & \tablefootmark{c} & parameter ($\gamma$) \tablefootmark{b} & \tablefootmark{d} & \tablefootmark{b} & HIFI & Model \tablefootmark{b}\\ (\arcsec) & (\arcsec) & (G$_0$) & (K) & & ($10^3$ G$_0$ $K^{1/2}$ cm$^{3}$) & ($10^{21} $ cm$^{-2}$) & (10$^{-21}$ W m$^{-3}$) & \multicolumn{2}{c}{($10^{-7}$ W m$^{-2}$ sr$^{-1}$)} \\ \hline NW3 (16) & 50 & 1873 & 337 / 333 & 1.9 & 11.0 / 29.5 & 10.5 & 4.4 / 1.4 & 8.0 & 11.0 / 8.0 \\ NW2 (12) & 48 & 1975 & 342 / 333 & 2.7 & 11.7 / 31.1 & 8.1 & 4.4 / 1.4 & 6.9 & 9.5 / 7.1 \\ NW1 (--3) & 47 & 2100 & 348 / 333 & 9.6 & 12.6 / 33.0 & 3.9 & 4.4 / 1.4 & 3.3 & 5.6 / 4.6 \\ S1 (--63) & 79 & 747 & 248 / 320 & 1.7 & 3.8 / 11.8 & 8.7 & 4.2 / 1.4 & 3.1 & 8.3 / 7.2 \\ S2 (--73) & 87 & 607 & 230 / 312 & 0.96 & 3.0 / 9.5 & 14.0 & 4.1 / 1.4 & 3.7 & 9.6 / 8.4 \\ \hline\end{tabular} \tablefoot{\tablefoottext{a}{Calculated using a projected distance and $G_0=2600$ at 42\arcsec\ from the star;} \tablefoottext{b}{From the PDR model using $n_{\rm H} = 2\times10^4 /7\times10^3~$cm$^{-3}$, respectively;} \tablefoottext{c}{Given as the ratio of the mid-IR intensities shown in Fig.~\ref{fig:components};} \tablefoottext{d}{Derived from the analysis of the mid-IR emission spectra.}} \vspace*{-4mm} \end{table}