Table 1: A- and E-state methanol (CH3OH) observations toward $\rho ~ {\rm Oph ~ A}$ with the 15 m SEST. $\eta _{\rm mb}$ and beam-FWHM are, respectively, 0.73 and 52 $^{\prime \prime }$ for the (2-1) and 0.67 and 35 $^{\prime \prime }$ for the (3-2) transitions.
        Observationa   CH3OH model

Rotational		 Frequencyb $E_{\rm u}/k$ 106 $A_{\rm ul}$ $v_{\rm LSR}$ $\Delta v$ $T_{\rm mb}$   $T_{\rm R}$ $\tau_0$ $T_{\rm ex}$
transition (MHz) (K) (s-1) (km s-1) (km s-1) (K)   (K)   (K)
$2_{-1}-1_{-1}~~~~{\rm E}$ 96739.39 12 2.48   $1.51 \pm 0.05$ $0.9 \pm 0.1$   1.16 -0.07 -11.6
$2_0-1_0~~~~{\rm A}$ 96741.42 7 2.38   $1.52 \pm 0.04$ $1.3 \pm 0.1$   1.14 0.09 16.3
$2_0-1_0~~~~{\rm E} $ 96744.58$^{\star}$ 20 3.30 $3.36 \pm 0.09$ $1.54 \pm 0.20$ $0.3 \pm 0.1$   0.21 0.05 7.8
$2_1-1_1~~~~{\rm E} $ 96755.51 28 2.48   $0.85 \pm 0.31$ $\le$0.10   0.04 0.005 11.6
$3_1-2_1~~~~{\rm A}^+$ 143865.79 28 11.16 $\ldots$ $\ldots$ $\sim$0.04c   0.04 0.005 10.2
$3_0-2_0~~~~{\rm E}$ 145093.75 27 11.93   $1.32 \pm 0.14$ $0.50 \pm 0.13$   0.32 0.04 12.9
$3_{-1}-2_{-1}~~~~{\rm E}$ 145097.47$^{\star}$ 20 10.61 $3.33 \pm 0.09$ $1.53 \pm 0.09$ $1.75 \pm 0.06$   1.72 0.12 18.4
$3_{0}-2_{0}~~~~{\rm A}$ 145103.23 14 12.23   $1.52 \pm 0.09$ $2.15 \pm 0.15$   2.28 0.21 15.9
$3_{2}-2_{2}~~~~{\rm A}^-$ 145124.41 52 6.50     <0.06   0.002 0.0003 9.7
$3_{2}-2_{2} ~~~~{\rm E}$ (blend) 145126.37 36 6.63   $1.28 \pm 0.19$ $0.25 \pm 0.06$   0.071 0.009 11.6
$3_{-2}-2_{-2}~~~~{\rm E}$ (blend) 145126.37 40 6.63         0.007 0.0004 10.8
Notes:
a Average of data for two positions, spaced by 30 $^{\prime \prime }$ North-South.
b Rest frequencies were adopted from Lovas (1992). Tuning frequencies are identified with an asterisk.
c Low resolution spectrum (1.4 MHz). This spectrum includes also DCO+ (2-1) at a level of $\int \!T_{\rm mb}~{\rm d}v_{z} = 6.4$ K km s-1.

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