\begin{table}%t1 \par \caption{\label{IRAMdata}Summary of the observations.} \small%\centerline { \begin{tabular}{@{\extracolsep{-5pt}}lllcc} \hline \hline \noalign{\smallskip} Transition & Frequency & Telescope & Beamsize & Targetted\\ & (GHz) & & & clump \\ \hline \noalign{\smallskip} DCN(2--1) & 144.8280015 & IRAM 30~m & 17$''$ & 1, 3 \\ %DCN(3$-$2) & 217.2385378 & CSO & 33$''$ & 1 \\ DCN(3$-$2) & 217.2385378 & IRAM 30~m & 11$''$ & 1, 3 \\ DCN(4$-$3) & 289.6449170 & APEX & 21$''$ & map \\ DCN(5$-$4) & 362.0457535 & APEX & 17$''$ & 1, 3 \\ DCO$^+$(2--1) & 144.0772890 & IRAM 30~m & 17$''$ & 1, 3 \\ HDCO(2$_{11}$--1$_{10}$) & 134.2848300 & IRAM 30~m & 18$''$ & 3 \\ CH$_2$DOH(2--1) & 89.3 (band) & IRAM 30~m & 28$''$ & 1, 3\\ HDO(2$_{1,1}$--2$_{1,2}$) & 241.5615500$^1$ & IRAM 30~m & 10$''$ & 3\\ C$_2$D(2--1) & 144.3 (band) & IRAM 30~m & 17$''$ & 3\\ DNC(2--1) & 152.609774 & IRAM 30~m & 16$''$ & 3 \\ \noalign{\smallskip} \hline \noalign{\smallskip} H$^{13}$CN(1--0) & 86.3399215 & IRAM 30~m & 28$''$& 1, 3 \\ H$^{13}$CN(3$-$2) & 259.0117978 & IRAM 30~m & 9.5$''$ & 1, 3 \\ H$^{13}$CN(4$-$3) & 345.3397694 & APEX & 18$''$ & map \\ H$^{13}$CO$^+$(1--0) & 86.7542884 & IRAM 30~m & 28$''$ & 1, 3\\ HCO$^+$(1--0) & 89.1884957 & IRAM 30~m & 28$''$ & 1, 3 \\ H$_2^{13}$CO(2$_{11}$--1$_{10}$) & 146.6356717 & IRAM 30~m & 17$''$ & 3 \\ C$^{17}$O(1--0) & 112.36 & IRAM 30~m & 22$''$ & 3 \\ C$^{17}$O(2--1) & 224.71 & IRAM 30~m & 11$''$ & 3 \\ CH$_3$OH(5$-$4)$^2$ & 241.8 (band) & IRAM 30~m & 10$''$ & map \\ CH$_3$OH(6--5) & 290.1 (band) & APEX & 21$''$ & 1, 3 \\ CH$_3$OH(1$_{1}$--1$_{0}$ A) & 303.367 & APEX & 21$''$ & 1, 3 \\ HNC(4$-$3) & 362.63 & APEX & 17$''$ & 1, 3 \\ \hline \end{tabular}} \smallskip $^1$ JPL database.\\ $^2$ HERA observations (see Leurini et~al. (submitted) for more detail). \end{table}