Table 1: Observed line parameters.
Obs. freq. Obs.-cal. Species Transition $\int T_A^*{\rm d}v$
MHz MHz   $J \rightarrow J'$ mK km s-1
SiNC:        
82 951 (1) .4 SiNC 6.5-5.5 (e) 69 (10)
82 962 (1.5)b .2 SiNC 6.5-5.5 (f) 60 (20)
95 723 (1)b .4 SiNC 7.5-6.5 (f) 81 (20)
108 484 (1)b -0.5 SiNC 8.5-7.5 (f) 47 (15)
133 991 (1) -0.8 SiNC 10.5-9.5 (e) 49 (10)
134 006 (2) 1 SiNC 10.5-9.5 (f) 42 (10)
SiCN:        
82 990.8b (4) .33 SiCN 7.5-6.5 (e) 160 (8)
83 015.7 (1) .1 SiCN 7.5-6.5 (f) 155 (12)
94 056.6 (1) .2 SiCN 8.5-7.5 (e) 159 (23)
94 081.7 (3) .3 SiCN 8.5-7.5 (f) 127 (23)
105 121.7b (3) -.3 SiCN 9.5-8.5 (e) 128 (30)
105 146.8 (2) .1 SiCN 9.5-8.5 (f) 140 (15)
Other:        
(MHz) (MHz)     mK km s-1
82 924 - U - 60
82 938 - U - 55
83 011 - U - 50
95 784 - U - 230
108 579 - U - 57
Upper limits:        
- 103 067.4 SiCCH 9.5-8.5 (e) <38
- 103 098.4 SiCCH 9.5-8.5 (f) <38
Notes: the number in parenthesis are 1$\sigma$ uncertainties on the last digit, derived from least square fits; they do not include the 5% calibration uncertainty. The upper limits quoted for the SiCCH line intensities correspond to 3$\sigma$. b Denotes a partly blended line.

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