Table 1: Line parameters for the all the species and data reported in this paper. When two spatial resolutions are indicated, we refer to the HBPW's corresponding to the IRAM 30-m and the SEST telescopes respectively. ^(a) Observed at the CSO. ^(b) Observed at the Effelsberg 100-m telescope. See Sect. 3 for details.

Molecule	Transition	Frequency	HPBW
		(GHz)	(arcsec)
12CO	J=2-1	230.538000	11
13CO	J=2-1	220.398686	22/44
C18O	J=1-0	109.782160	22/44
	J=2-1	219.560357	11
CS	J=2-1	97.980950	24
C2H	N=1-0, J=3/2-1/2
	F=2-1	87.316925	28/56
	F=1-0	87.328624	28/56
	N=1-0, J=1/2-1/2
	F=1-1	87.402004	28/56
	F=0-1	87.407165	28/56
	N=3-2, J=7/2-5/2
	F=4-3	262.004260	28(a)
	F=3-2	262.006480	28(a)
	N=3-2, J=5/2-3/2
	F=3-2	262.064990	28(a)
	F=2-1	262.067460	28(a)
c-C3H	N=212-111, J=5/2-3/2
	F=3-2	91.494349	27/54
	F=2-1	91.497608	27/54
	N=212-111, J=3/2-1/2
	F=1-0	91.692752	27/54
	F=2-1	91.699471	27/54
l-C3H	J=9/2-7/2
	F=5-4 (f)	97.995166	25/50
	F=4-3 (f)	97.995913	25/50
	F=5-4 (e)	98.011611	25/50
	F=4-3 (e)	98.012524	25/50
c-C3H2	11,0-10,1	18.343145	54(b)
	21,2-10,1	85.338898	28/56
l-C3H2	10,1-00,0	20.792590	48(b)
	33,0-22,1	216.27875	11
C4H	N=9-8, J=19/2-17/2
	F=9-8	85.634006	28/56
	F=10-9	85.634017	28/56
	N=9-8, J=17/2-15/2
	F=8-7	85.672581	28/56
	F=8-8	85.672583	28/56
l-C4H2	110,11-100,10	98.245016	24
CH3C2H	J=5-4
	K=2	85.450730	28
	K=1	85.455622	28
	K=0	85.457272	28
C6H	J=59/2-57/2 e	81.777893	28
	J=59/2-57/2 f	81.801247	28
HN13C	J=1-0
	F=0-1	87.090735	27
	F=2-1	87.090859	27
	F=1-1	87.090942	27
HC3N	J=9-8	81.881468	28