Off-peak Peak
Molecule Observed Model Observed Model
H2 ... 6.5 (21) ... 8.6 (22)
H ... 1.4 (21) ... 1.9 (22)
C+ < 2.4 (18) 5.1 (17) 9.0 (18) 6.9 (18)
C 1.0 (17) 4.7 (16) 2.9 (17) 6.4 (17)
CO 5.0 (17) 1.1 (18) 6.5 (18) 1.5 (19)
C18O 1.0 (15) 8.9 (14) 1.3 (16) 1.2 (16)
CS 1.5 (13) 2.7 (13) 1.5 (15) 3.7 (14)
CN 8.0 (13) 3.8 (13) 4.0 (14) 5.1 (14)
HCN 1.3 (13) 1.2 (13) 3.0 (14) 1.6 (14)
HNC 5.0 (12) 2.7 (12) 6.0 (13) 3.7 (13)
HCO+ 1.5 (13) 2.6 (12) 2.0 (14) 3.5 (13)
H13CO ... 6.3 (10) 3.0 (12) 8.5 (11)
H2CO 1.2 (13) 6.0 (12) 4.0 (14) 8.2 (13)
C2H 3.0 (13) 3.6 (13) 1.3 (14) 4.9 (14)
NO ... 1.3 (13) 1.5 (14) 1.8 (14)
H2S 8.9 (12) 1.4 (11) 3.9 (14) 2.0 (12)
SO < 2.5 (13) 1.5 (13) 6.0 (14) 2.0 (14)
SO2 < 9.0 (11) 6.5 (11) 8.0 (12) 8.8 (12)