\begin{table}%t4 \par \caption{\label{7:tab:isoprop}CO isotopologue and [C I] properties at the source position.} \small %\centerline { \begin{tabular}{l l l l l l l l l } \hline \hline Source & \multicolumn{3}{c}{$^{13}$CO 6--5} & $^{13}$CO 8--7 & C$^{18}$O 6--5 & [C I] 2--1 \\ & \multicolumn{3}{c}{\hrulefill} & & \\ & $\int T_{\rm{MB}} {\rm d}V$ & $T_{\rm{peak}}$ & {\it FWHM} & $\int T_{\rm{MB}} {\rm d}V$ & $\int T_{\rm{MB}} {\rm d}V$ & $\int T_{\rm{MB}} {\rm d}V$ \\ & K km s$^{-1}$ & K & km s$^{-1}$ & K km s$^{-1}$ & K km s$^{-1}$ & K km s$^{-1}$ \\ \hline TMR 1 & 4.3 & 1.9 & 2.0 & -- & -- & 2.9\\ HH 46 & 3.9 & 3.1 & 1.5 &$<$0.3$^a$ & $<$0.15$^a$ & 2.3 \\ Ced 110 IRS4 & 5.2 & 2.1 & 2.3& -- & -- & 2.5\\ BHR 71 & 1.4 & 1.5 & 0.8 & -- & -- & $<$0.6$^a$\\ IRAS 12496-7650 & 3.8 & 1.7 & 2.1& -- & -- & $<$0.6$^a$\\ \hline \end{tabular}} \par \smallskip $^a$ 1$\sigma$ level in a 0.7 km s$^{-1}$ bin.\\ \end{table}