\begin{table}%T2 \caption{\label{values}Best-fit model results from the CH$_3$OH analysis towards the two clumps. } \small%\centerline { \begin{tabular}{lccccc} \hline\hline Source &$S$&$n_{\rm H_2}$&$T$&$N_{\rm CH_3OH}$ & $x_{\rm CH_3OH}$\\ &$['']$&[cm$^{-3}$]&[K]&[cm$^{-2}$] & \\ \noalign{\smallskip} \hline \noalign{\smallskip} clump~1& 10 & $6^{+4}_{-3}\times 10^6$&$\rm 45^{+47}_{-17}$& $3^{+1}_{-1}\times 10^{14} $ & 2~$\times$~10$^{-9}$ \\ \noalign{\smallskip} clump~3&8&$ 5^{+5}_{-2}\times 10^6 $&$\rm 35^{+17}_{-15}$& $ 3^{+3}_{-1}\times 10^{14}$ & 2~$\times$~10$^{-9}$ \\ \noalign{\smallskip} \hline \end{tabular}} \smallskip The uncertainties correspond to the $3\sigma$ confidence level. The methanol column density ($N$) and fractional abundance relative to H$_2$ ($x$) is computed averaged over the extent of the clumps. \end{table}