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Table A.1

Line properties for CH3NC in Tmb.

Line Frequency Eu g u Au I VLSR ΔV
(GHz) (K) (s-1) (mK[Tmb]  km s-1) (km s-1) (km s-1)

HCO peak DCO+ peak HCO peak DCO+ peak HCO peak DCO+ peak

J = 5–4 K = 4 100.490163 127.4 22 2.92(−5) <9 <12 10.71 ± 0.026 ... 0.50 ± 0.06 ...
J = 5–4 K = 3 100.506072 78.0 44 5.20(−5) 12.1 ± 2.5 <12
J = 5–4 K = 2 100.517433 42.7 22 6.83(−5) <9 <12
J = 5–4 K = 1 100.524249 21.5 22 7.81(−5) 20.1 ± 2.3 <12
J = 5–4 K = 0 100.526541 14.5 22 8.13(−5) 16.5 ± 2.4 <12

Notes. Upper limits at the 95% (2 sigma) level assuming a 0.7 km s-1 FWHM.

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