Table 2: 30-m data, line parameters.

7.0 $~{\rm km~s}^{-1}$ cloud
$^{12}{\rm CO}$ Area $V_{\rm LSR}$ Width Peak
  K km s-1 km s-1 km s-1 K
$J=1\!\!\rightarrow\!\!0$ $3.26 \pm 0.02$ $ 7.02 \pm 0.01 $ $1.25 \pm 0.01$ 2.34
$J=2\!\!\rightarrow\!\! 1$ $1.80 \pm 0.05$ $ 7.00 \pm 0.02 $ $1.15 \pm 0.03$ 1.36
$^{13}{\rm CO}$        
$J=2\!\!\rightarrow\!\! 1$ $0.077 \pm 0.009$ [7.02] $ 0.95 \pm 0.16 $ 0.077
8.0 $~{\rm km~s}^{-1}$ cloud
$^{12}{\rm CO}$ Area $V_{\rm LSR}$ Width Peak
  K km s-1 km s-1 km s-1 K
$J=1\!\!\rightarrow\!\!0$ $1.02 \pm 0.02$ $ 8.01 \pm 0.01 $ $0.57 \pm 0.01$ 1.66
$J=2\!\!\rightarrow\!\! 1$ $0.63 \pm 0.05$ $ 7.99 \pm 0.02 $ $0.65 \pm 0.04$ 0.91
$^{13}{\rm CO}$        
$J=2\!\!\rightarrow\!\! 1$ $0.045 \pm 0.006$ [8.00] $ 0.69 \pm 0.11 $ 0.069

Disk emission*
$^{13}{\rm CO}$        
  Jy km s-1   km s-1 K
$J=2\!\!\rightarrow\!\! 1$ <0.12 at $3\sigma $ - [3.5] -
* The $3\sigma $ upper limit on the integrated area in $^{13}{\rm CO}$  $J=2\!\!\rightarrow\!\! 1$  for the disk is derived from the noise level
using the $^{12}{\rm CO}$  $J=2\!\!\rightarrow\!\! 1$  linewidth from the PdBI. Peak intensities are antenna temperatures TA*.

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