\begin{table}%t4 \caption{\label{TabISOlirat}Far-infrared line flux ratios to the optical 5007~\AA\ line $I/I$(5007~\AA) corrected for the optical line reddening.} %\centerline {\small \begin{tabular}{llllll} \hline\hline Line & \#2 & \#5 \\ \hline {}[\ion{O}{iii}] 51.81~$\mu$m & 0.25 & 0.36 \\ {}[\ion{O}{i}] 63.19~$\mu$m & 0.07 & 0.10 \\ {}[\ion{O}{iii}] 88.36~$\mu$m & 0.10 & 0.14 \\ {}[\ion{O}{i}] 145.5~$\mu$m &$<$0.0024&$<$0.01 \\ \hline \end{tabular}} \medskip {Note}: the 5007~\AA\ line contribution of 75\% to the total FMK emission in the $F475W$ filter is assumed. Optical line attenuation due to reddening of 200~times is assumed in both the ISO LWS regions, see text. FIR line attenuation is neglected. \end{table}