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Table 2:

Energies of the upper levels, $E_{\rm up}$, main-beam efficiencies, $\eta _{{\rm mb}}$, and main-beam FWHM:s, $\theta _{{\rm mb}}$, at the frequencies of the observed CO and SiO lines.
Transition Frequency $E_{\rm up}$ $\eta _{{\rm mb}}$ $\theta _{{\rm mb}}$ Telescope
  [GHz] [K]   ['']  
${\rm CO}(J=1\rightarrow0)$ 115.271 5.5 0.43 33 OSO
${\rm CO}(J=1\rightarrow0)$ 115.271 5.5 0.74 22 IRAM
${\rm CO}(J=2\rightarrow1)$ 230.538 16.6 0.52 11 IRAM
${\rm CO}(J=3\rightarrow2)$ 345.796 33.2 0.56 14 JCMT
${\rm CO}(J=3\rightarrow2)$ 345.796 33.2 0.70 18 APEX
${\rm SiO}(J=2\rightarrow1)$ 86.847 6.3 0.65 44 OSO
${\rm SiO}(J=2\rightarrow1)$ 86.847 6.3 0.78 29 IRAM
${\rm SiO}(J=5\rightarrow4)$ 217.105 31.3 0.57 12 IRAM
${\rm SiO}(J=6\rightarrow5)$ 260.518 43.8 0.69 21 JCMT
${\rm SiO}(J=8\rightarrow7)$ 347.331 75.0 0.63 14 JCMT
${\rm SiO}(J=8\rightarrow7)$ 347.331 75.0 0.70 18 APEX

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