\begin{table}%T5 \caption{\label{hfsresult}Results of the hyperfine structure fit.} \small%\centering \par \begin{tabular}{llcccccc} \hline \hline \noalign{\smallskip} Source & Line & $v_{\rm lsr}$ & {\it FWHM} & $T_{\rm mb}\times\tau_{\rm tot}$ & $\tau_{\rm tot}$ & $T_{\rm ex} $& $n_{\rm cr}$ (50~K) \\ & & \small{(km s$^{-1}$)} & {\small (km s$^{-1}$)} & {\small (K)} & & {\small (K)} & {\small (cm$^{-3}$)} \\ \hline \noalign{\smallskip} Clump 1 & DCN(2--1) & 10.01~$\pm$~0.02 & 1.90~$\pm$~0.04& 1.2~$\pm$~0.1 & 0.7~$\pm$~0.2 & 5.0~$\pm$~1.8 & 9.1~$\times$~10$^{5}$ \\ & H$^{13}$CN(1--0) & 10.13~$\pm$~0.02 & 1.78~$\pm$~0.07 & 0.92~$\pm$~0.09& 0.56~$\pm$~0.41& 4.6~$\pm$~3.8 & 1.8~$\times$~10$^{5}$\\ \hline \noalign{\smallskip} Clump 3 & DCN(2--1) & 10.66~$\pm$~0.01 & 1.30~$\pm$~0.02 & 2.8~$\pm$~0.1 & 0.1~$\pm$~0.4 & 31.5~$\pm$~127 &9.1~$\times$~10$^{5}$ \\ & H$^{13}$CN(1--0) & 10.62~$\pm$~0.02 & 1.61~$\pm$~0.03 & 0.96~$\pm$~0.02 & 0.10~$\pm$~0.04 & 12.7~$\pm$~5.3 &1.8~$\times$~10$^{5}$\\ \hline \end{tabular} \end{table}