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\section{Excitation Temperature}  An important parameter We used the following formulae  to convert determine  the observed temperatures into Mass is mass of  the excitation temperature. outflow.  \begin{equation} %\label{eqn:Mass from temp}  M(v, \alpha, \delta) = [{\rm H}_2/^{12}{\rm CO}] \mu_m A(\alpha, \delta) F (T_{ex}) T_B(v, \alpha, \delta) \Delta v