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HITRAN2020 Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
1waterH2O2H(18)OH0.00199983
1waterH2O3H(17)OH0.000371884
1waterH2O4HD(16)O0.000310693
1waterH2O5HD(18)O0.000000623003
1waterH2O6HD(17)O0.000000115853
1waterH2O7DD(16)O0.000000024197
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
2carbon dioxideCO27(18)O(12)C(18)O0.00000395734
2carbon dioxideCO28(17)O(12)C(18)O0.0000014718
2carbon dioxideCO29(17)O(12)C(17)O0.000000136847
2carbon dioxideCO210(18)O(13)C(18)O0.00000004446
2carbon dioxideCO211(18)O(13)C(17)O0.0000000165354
2carbon dioxideCO212(17)O(13)C(17)O0.0000000015375
3ozoneO31(16)O(16)O(16)O0.992901
3ozoneO32(16)O(16)O(18)O0.00398194
3ozoneO33(16)O(18)O(16)O0.00199097
3ozoneO34(16)O(16)O(17)O0.000740475
3ozoneO35(16)O(17)O(16)O0.000370237
4nitrous oxideN2O1(14)N(14)N(16)O0.990333
4nitrous oxideN2O2(14)N(15)N(16)O0.00364093
4nitrous oxideN2O3(15)N(14)N(16)O0.00364093
4nitrous oxideN2O4(14)N(14)N(18)O0.00198582
4nitrous oxideN2O5(14)N(14)N(17)O0.00036928
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292
6methaneCH41(12)CH40.988274
6methaneCH42(13)CH40.0111031
6methaneCH43(12)CH3D0.000615751
6methaneCH44(13)CH3D0.00000691785
7oxygenO21(16)O(16)O0.995262
7oxygenO22(16)O(18)O0.00399141
7oxygenO23(16)O(17)O0.000742235
8nitric oxideNO1(14)N(16)O0.993974
8nitric oxideNO2(15)N(16)O0.00365431
8nitric oxideNO3(14)N(18)O0.00199312
9sulfur dioxideSO21(32)S(16)O20.945678
9sulfur dioxideSO22(34)S(16)O20.0419503
9sulfur dioxideSO23(33)S(16)O20.00746446
9sulfur dioxideSO24(16)O(32)S(18)O0.00379256
10nitrogen dioxideNO21(14)N(16)O20.991616
10nitrogen dioxideNO22(15)N(16)O20.00364564
11ammoniaNH31(14)NH30.995872
11ammoniaNH32(15)NH30.00366129
12nitric acidHNO31H(14)N(16)O30.98911
12nitric acidHNO32H(15)N(16)O30.00363643
13hydroxyl radicalOH1(16)OH0.997473
13hydroxyl radicalOH2(18)OH0.00200014
13hydroxyl radicalOH3(16)OD0.000155371
14hydrogen fluorideHF1H(19)F0.999844
14hydrogen fluorideHF2D(19)F0.000155741
15hydrogen chlorideHCl1H(35)Cl0.757587
15hydrogen chlorideHCl2H(37)Cl0.242257
15hydrogen chlorideHCl3D(35)Cl0.000118005
15hydrogen chlorideHCl4D(37)Cl0.000037735
16hydrogen bromideHBr1H(79)Br0.506781
16hydrogen bromideHBr2H(81)Br0.493063
16hydrogen bromideHBr3D(79)Br0.0000789384
16hydrogen bromideHBr4D(81)Br0.0000768016
17hydrogen iodideHI1H(127)I0.999844
17hydrogen iodideHI2D(127)I0.000155741
18monochlorine monoxideClO1(35)Cl(16)O0.755908
18monochlorine monoxideClO2(37)Cl(16)O0.24172
19carbonyl sulfideOCS1(16)O(12)C(32)S0.937395
19carbonyl sulfideOCS2(16)O(12)C(34)S0.0415828
19carbonyl sulfideOCS3(16)O(13)C(32)S0.0105315
19carbonyl sulfideOCS4(16)O(12)C(33)S0.00739908
19carbonyl sulfideOCS5(18)O(12)C(32)S0.00187967
19carbonyl sulfideOCS6(16)O(13)C(34)S0.000467176
20formaldehydeH2CO1H2(12)C(16)O0.986237
20formaldehydeH2CO2H2(13)C(16)O0.0110802
20formaldehydeH2CO3H2(12)C(18)O0.00197761
21hypochlorous acidHOCl1H(16)O(35)Cl0.75579
21hypochlorous acidHOCl2H(16)O(37)Cl0.241683
22nitrogenN21(14)N20.992687
22nitrogenN22(14)N(15)N0.00729916
23hydrogen cyanideHCN1H(12)C(14)N0.985114
23hydrogen cyanideHCN2H(13)C(14)N0.0110676
23hydrogen cyanideHCN3H(12)C(15)N0.00362174
24methyl chlorideCH3Cl1(12)CH3(35)Cl0.748937
24methyl chlorideCH3Cl2(12)CH3(37)Cl0.239491
25hydrogen peroxideH2O21H2(16)O20.994952
26acetyleneC2H21(12)C2H20.977599
26acetyleneC2H22(12)C(13)CH20.0219663
26acetyleneC2H23H(12)C2D0.00030455
27ethaneC2H61(12)C2H60.97699
27ethaneC2H62(13)C(12)CH60.0219526
28phosphinePH31(30)PH30.999533
29carbonic difluorideCOF21(12)C(16)O(19)F20.986544
29carbonic difluorideCOF22(13)C(16)O(19)F20.0110837
30sulfur hexafluorideSF61(32)S(19)F60.95018
31hydrogen sulfideH2S1H2(32)S0.949884
31hydrogen sulfideH2S2H2(34)S0.0421369
31hydrogen sulfideH2S3H2(33)S0.00749766
32formic acidHCOOH1H(12)C(16)O(16)OH0.983898
33hydroperoxy radicalHO21H(16)O20.995107
34atomic oxygenO1(16)O0.997628
35chlorine nitrateClONO21(35)Cl(16)ON(16)O20.74957
35chlorine nitrateClONO22(37)Cl(16)ON(16)O20.239694
36nitric oxide+1NO+1(14)N(16)O0.993974
37hypobromous acidHOBr1H(16)O(79)Br0.505579
37hypobromous acidHOBr2H(16)O(81)Br0.491894
38ethyleneC2H41(12)C2H40.977294
38ethyleneC2H42(12)C(13)CH40.0219595
39methanolCH3OH1(12)CH3(16)OH0.98593
40methyl bromideCH3Br1(12)CH3(79)Br0.500995
40methyl bromideCH3Br2(12)CH3(81)Br0.487433
41methyl cyanideCH3CN1(12)CH3(12)C(14)N0.973866
42carbon tetrafluorideCF41(12)C(19)F40.98889
43diacetyleneC4H21(12)C4H20.955998
44cyanoacetyleneC3HN1H(12)C3(14)N0.963346
45Hydrogen moleculeH21H20.999688
45Hydrogen moleculeH22HD0.000311432
46carbon monosulfideCS1(12)C(32)S0.939624
46carbon monosulfideCS2(12)C(34)S0.0416817
46carbon monosulfideCS3(13)C(32)S0.0105565
46carbon monosulfideCS4(12)C(33)S0.00741668
47sulfur trioxideSO31(32)S(16)O30.943434
48cyanogenC2N21(12)C2(14)N20.970752
49phosgeneCOCl21(12)C(16)O(35)Cl20.566392
49phosgeneCOCl22(12)C(16)O(35)Cl(37)Cl0.362235
50sulfur monoxideSO1(32)S(16)O0.947926
50sulfur monoxideSO2(34)S(16)O0.04205
50sulfur monoxideSO3(32)S(18)O0.00190079
51methyl fluorideCH3F1(12)CH3(19)F0.988428
52germaneH4Ge1(74)GeH40.365172
52germaneH4Ge2(72)GeH40.274129
52germaneH4Ge3(70)GeH40.205072
52germaneH4Ge4(73)GeH40.0775517
52germaneH4Ge5(76)GeH40.0775517
53carbon disulfideCS21(12)C(32)S20.892811
53carbon disulfideCS22(32)S(12)C(34)S0.0792103
53carbon disulfideCS23(32)S(12)C(33)S0.0140944
53carbon disulfideCS24(32)S(13)C(32)S0.0100306
54methyl iodideCH3I1(12)CH3(127)I0.988428
55nitrogen trifluorideNF31(14)N(19)F30.996337



HITRAN2016 Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
1waterH2O2H(18)OH0.00199983
1waterH2O3H(17)OH0.000371884
1waterH2O4HD(16)O0.000310693
1waterH2O5HD(18)O0.000000623003
1waterH2O6HD(17)O0.000000115853
1waterH2O7DD(16)O0.000000024197
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
2carbon dioxideCO27(18)O(12)C(18)O0.00000395734
2carbon dioxideCO28(17)O(12)C(18)O0.0000014718
2carbon dioxideCO29(17)O(12)C(17)O0.000000136847
2carbon dioxideCO210(18)O(13)C(18)O0.00000004446
2carbon dioxideCO211(18)O(13)C(17)O0.0000000165354
2carbon dioxideCO212(17)O(13)C(17)O0.0000000015375
3ozoneO31(16)O(16)O(16)O0.992901
3ozoneO32(16)O(16)O(18)O0.00398194
3ozoneO33(16)O(18)O(16)O0.00199097
3ozoneO34(16)O(16)O(17)O0.000740475
3ozoneO35(16)O(17)O(16)O0.000370237
4nitrous oxideN2O1(14)N(14)N(16)O0.990333
4nitrous oxideN2O2(14)N(15)N(16)O0.00364093
4nitrous oxideN2O3(15)N(14)N(16)O0.00364093
4nitrous oxideN2O4(14)N(14)N(18)O0.00198582
4nitrous oxideN2O5(14)N(14)N(17)O0.00036928
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292
6methaneCH41(12)CH40.988274
6methaneCH42(13)CH40.0111031
6methaneCH43(12)CH3D0.000615751
6methaneCH44(13)CH3D0.00000691785
7oxygenO21(16)O(16)O0.995262
7oxygenO22(16)O(18)O0.00399141
7oxygenO23(16)O(17)O0.000742235
8nitric oxideNO1(14)N(16)O0.993974
8nitric oxideNO2(15)N(16)O0.00365431
8nitric oxideNO3(14)N(18)O0.00199312
9sulfur dioxideSO21(32)S(16)O20.945678
9sulfur dioxideSO22(34)S(16)O20.0419503
10nitrogen dioxideNO21(14)N(16)O20.991616
11ammoniaNH31(14)NH30.995872
11ammoniaNH32(15)NH30.00366129
12nitric acidHNO31H(14)N(16)O30.98911
12nitric acidHNO32H(15)N(16)O30.00363643
13hydroxyl radicalOH1(16)OH0.997473
13hydroxyl radicalOH2(18)OH0.00200014
13hydroxyl radicalOH3(16)OD0.000155371
14hydrogen fluorideHF1H(19)F0.999844
14hydrogen fluorideHF2D(19)F0.000155741
15hydrogen chlorideHCl1H(35)Cl0.757587
15hydrogen chlorideHCl2H(37)Cl0.242257
15hydrogen chlorideHCl3D(35)Cl0.000118005
15hydrogen chlorideHCl4D(37)Cl0.000037735
16hydrogen bromideHBr1H(79)Br0.506781
16hydrogen bromideHBr2H(81)Br0.493063
16hydrogen bromideHBr3D(79)Br0.0000789384
16hydrogen bromideHBr4D(81)Br0.0000768016
17hydrogen iodideHI1H(127)I0.999844
17hydrogen iodideHI2D(127)I0.000155741
18monochlorine monoxideClO1(35)Cl(16)O0.755908
18monochlorine monoxideClO2(37)Cl(16)O0.24172
19carbonyl sulfideOCS1(16)O(12)C(32)S0.937395
19carbonyl sulfideOCS2(16)O(12)C(34)S0.0415828
19carbonyl sulfideOCS3(16)O(13)C(32)S0.0105315
19carbonyl sulfideOCS4(16)O(12)C(33)S0.00739908
19carbonyl sulfideOCS5(18)O(12)C(32)S0.00187967
20formaldehydeH2CO1H2(12)C(16)O0.986237
20formaldehydeH2CO2H2(13)C(16)O0.0110802
20formaldehydeH2CO3H2(12)C(18)O0.00197761
21hypochlorous acidHOCl1H(16)O(35)Cl0.75579
21hypochlorous acidHOCl2H(16)O(37)Cl0.241683
22nitrogenN21(14)N20.992687
22nitrogenN22(14)N(15)N0.00729916
23hydrogen cyanideHCN1H(12)C(14)N0.985114
23hydrogen cyanideHCN2H(13)C(14)N0.0110676
23hydrogen cyanideHCN3H(12)C(15)N0.00362174
24methyl chlorideCH3Cl1(12)CH3(35)Cl0.748937
24methyl chlorideCH3Cl2(12)CH3(37)Cl0.239491
25hydrogen peroxideH2O21H2(16)O20.994952
26acetyleneC2H21(12)C2H20.977599
26acetyleneC2H22(12)C(13)CH20.0219663
26acetyleneC2H23H(12)C2D0.00030455
27ethaneC2H61(12)C2H60.97699
27ethaneC2H62(13)C(12)CH60.0219526
28phosphinePH31(30)PH30.999533
29carbonic difluorideCOF21(12)C(16)O(19)F20.986544
29carbonic difluorideCOF22(13)C(16)O(19)F20.0110837
30sulfur hexafluorideSF61(32)S(19)F60.95018
31hydrogen sulfideH2S1H2(32)S0.949884
31hydrogen sulfideH2S2H2(34)S0.0421369
31hydrogen sulfideH2S3H2(33)S0.00749766
32formic acidHCOOH1H(12)C(16)O(16)OH0.983898
33hydroperoxy radicalHO21H(16)O20.995107
34atomic oxygenO1(16)O0.997628
35chlorine nitrateClONO21(35)Cl(16)ON(16)O20.74957
35chlorine nitrateClONO22(37)Cl(16)ON(16)O20.239694
36nitric oxide+1NO+1(14)N(16)O0.993974
37hypobromous acidHOBr1H(16)O(79)Br0.505579
37hypobromous acidHOBr2H(16)O(81)Br0.491894
38ethyleneC2H41(12)C2H40.977294
38ethyleneC2H42(12)C(13)CH40.0219595
39methanolCH3OH1(12)CH3(16)OH0.98593
40methyl bromideCH3Br1(12)CH3(79)Br0.500995
40methyl bromideCH3Br2(12)CH3(81)Br0.487433
41methyl cyanideCH3CN1(12)CH3(12)C(14)N0.973866
42carbon tetrafluorideCF41(12)C(19)F40.98889
43diacetyleneC4H21(12)C4H20.955998
44cyanoacetyleneC3HN1H(12)C3(14)N0.963346
45Hydrogen moleculeH21H20.999688
45Hydrogen moleculeH22HD0.000311432
46carbon monosulfideCS1(12)C(32)S0.939624
46carbon monosulfideCS2(12)C(34)S0.0416817
46carbon monosulfideCS3(13)C(32)S0.0105565
46carbon monosulfideCS4(12)C(33)S0.00741668
47sulfur trioxideSO31(32)S(16)O30.943434
48cyanogenC2N21(12)C2(14)N20.970752
49phosgeneCOCl21(12)C(16)O(35)Cl20.566392
49phosgeneCOCl22(12)C(16)O(35)Cl(37)Cl0.362235



HITRAN2012 Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
1waterH2O2H(18)OH0.00199983
1waterH2O3H(17)OH0.000371884
1waterH2O4HD(16)O0.000310693
1waterH2O5HD(18)O0.000000623003
1waterH2O6HD(17)O0.000000115853
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
2carbon dioxideCO27(18)O(12)C(18)O0.00000395734
2carbon dioxideCO28(17)O(12)C(18)O0.0000014718
2carbon dioxideCO29(17)O(12)C(17)O0.000000136847
3ozoneO31(16)O(16)O(16)O0.992901
3ozoneO32(16)O(16)O(18)O0.00398194
3ozoneO33(16)O(18)O(16)O0.00199097
3ozoneO34(16)O(16)O(17)O0.000740475
3ozoneO35(16)O(17)O(16)O0.000370237
4nitrous oxideN2O1(14)N(14)N(16)O0.990333
4nitrous oxideN2O2(14)N(15)N(16)O0.00364093
4nitrous oxideN2O3(15)N(14)N(16)O0.00364093
4nitrous oxideN2O4(14)N(14)N(18)O0.00198582
4nitrous oxideN2O5(14)N(14)N(17)O0.00036928
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292
6methaneCH41(12)CH40.988274
6methaneCH42(13)CH40.0111031
6methaneCH43(12)CH3D0.000615751
6methaneCH44(13)CH3D0.00000691785
7oxygenO21(16)O(16)O0.995262
7oxygenO22(16)O(18)O0.00399141
7oxygenO23(16)O(17)O0.000742235
8nitric oxideNO1(14)N(16)O0.993974
8nitric oxideNO2(15)N(16)O0.00365431
8nitric oxideNO3(14)N(18)O0.00199312
9sulfur dioxideSO21(32)S(16)O20.945678
9sulfur dioxideSO22(34)S(16)O20.0419503
10nitrogen dioxideNO21(14)N(16)O20.991616
11ammoniaNH31(14)NH30.995872
11ammoniaNH32(15)NH30.00366129
12nitric acidHNO31H(14)N(16)O30.98911
12nitric acidHNO32H(15)N(16)O30.00363643
13hydroxyl radicalOH1(16)OH0.997473
13hydroxyl radicalOH2(18)OH0.00200014
13hydroxyl radicalOH3(16)OD0.000155371
14hydrogen fluorideHF1H(19)F0.999844
14hydrogen fluorideHF2D(19)F0.000155741
15hydrogen chlorideHCl1H(35)Cl0.757587
15hydrogen chlorideHCl2H(37)Cl0.242257
15hydrogen chlorideHCl3D(35)Cl0.000118005
15hydrogen chlorideHCl4D(37)Cl0.000037735
16hydrogen bromideHBr1H(79)Br0.506781
16hydrogen bromideHBr2H(81)Br0.493063
16hydrogen bromideHBr3D(79)Br0.0000789384
16hydrogen bromideHBr4D(81)Br0.0000768016
17hydrogen iodideHI1H(127)I0.999844
17hydrogen iodideHI2D(127)I0.000155741
18monochlorine monoxideClO1(35)Cl(16)O0.755908
18monochlorine monoxideClO2(37)Cl(16)O0.24172
19carbonyl sulfideOCS1(16)O(12)C(32)S0.937395
19carbonyl sulfideOCS2(16)O(12)C(34)S0.0415828
19carbonyl sulfideOCS3(16)O(13)C(32)S0.0105315
19carbonyl sulfideOCS4(16)O(12)C(33)S0.00739908
19carbonyl sulfideOCS5(18)O(12)C(32)S0.00187967
20formaldehydeH2CO1H2(12)C(16)O0.986237
20formaldehydeH2CO2H2(13)C(16)O0.0110802
20formaldehydeH2CO3H2(12)C(18)O0.00197761
21hypochlorous acidHOCl1H(16)O(35)Cl0.75579
21hypochlorous acidHOCl2H(16)O(37)Cl0.241683
22nitrogenN21(14)N20.992687
22nitrogenN22(14)N(15)N0.00729916
23hydrogen cyanideHCN1H(12)C(14)N0.985114
23hydrogen cyanideHCN2H(13)C(14)N0.0110676
23hydrogen cyanideHCN3H(12)C(15)N0.00362174
24methyl chlorideCH3Cl1(12)CH3(35)Cl0.748937
24methyl chlorideCH3Cl2(12)CH3(37)Cl0.239491
25hydrogen peroxideH2O21H2(16)O20.994952
26acetyleneC2H21(12)C2H20.977599
26acetyleneC2H22(12)C(13)CH20.0219663
26acetyleneC2H23H(12)C2D0.00030455
27ethaneC2H61(12)C2H60.97699
27ethaneC2H62(13)C(12)CH60.0219526
28phosphinePH31(30)PH30.999533
29carbonic difluorideCOF21(12)C(16)O(19)F20.986544
29carbonic difluorideCOF22(13)C(16)O(19)F20.0110837
30sulfur hexafluorideSF61(32)S(19)F60.95018
31hydrogen sulfideH2S1H2(32)S0.949884
31hydrogen sulfideH2S2H2(34)S0.0421369
31hydrogen sulfideH2S3H2(33)S0.00749766
32formic acidHCOOH1H(12)C(16)O(16)OH0.983898
33hydroperoxy radicalHO21H(16)O20.995107
34atomic oxygenO1(16)O0.997628
35chlorine nitrateClONO21(35)Cl(16)ON(16)O20.74957
35chlorine nitrateClONO22(37)Cl(16)ON(16)O20.239694
36nitric oxide+1NO+1(14)N(16)O0.993974
37hypobromous acidHOBr1H(16)O(79)Br0.505579
37hypobromous acidHOBr2H(16)O(81)Br0.491894
38ethyleneC2H41(12)C2H40.977294
38ethyleneC2H42(12)C(13)CH40.0219595
39methanolCH3OH1(12)CH3(16)OH0.98593
40methyl bromideCH3Br1(12)CH3(79)Br0.500995
40methyl bromideCH3Br2(12)CH3(81)Br0.487433
41methyl cyanideCH3CN1(12)CH3(12)C(14)N0.973866
42carbon tetrafluorideCF41(12)C(19)F40.98889
43diacetyleneC4H21(12)C4H20.955998
44cyanoacetyleneC3HN1H(12)C3(14)N0.963346
45Hydrogen moleculeH21H20.999688
45Hydrogen moleculeH22HD0.000311432
46carbon monosulfideCS1(12)C(32)S0.939624
46carbon monosulfideCS2(12)C(34)S0.0416817
46carbon monosulfideCS3(13)C(32)S0.0105565
46carbon monosulfideCS4(12)C(33)S0.00741668
47sulfur trioxideSO31(32)S(16)O30.943434



HITRAN2008 Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
1waterH2O2H(18)OH0.00199983
1waterH2O3H(17)OH0.000371884
1waterH2O4HD(16)O0.000310693
1waterH2O5HD(18)O0.000000623003
1waterH2O6HD(17)O0.000000115853
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
2carbon dioxideCO27(18)O(12)C(18)O0.00000395734
2carbon dioxideCO28(17)O(12)C(18)O0.0000014718
3ozoneO31(16)O(16)O(16)O0.992901
3ozoneO32(16)O(16)O(18)O0.00398194
3ozoneO33(16)O(18)O(16)O0.00199097
3ozoneO34(16)O(16)O(17)O0.000740475
3ozoneO35(16)O(17)O(16)O0.000370237
4nitrous oxideN2O1(14)N(14)N(16)O0.990333
4nitrous oxideN2O2(14)N(15)N(16)O0.00364093
4nitrous oxideN2O3(15)N(14)N(16)O0.00364093
4nitrous oxideN2O4(14)N(14)N(18)O0.00198582
4nitrous oxideN2O5(14)N(14)N(17)O0.00036928
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292
6methaneCH41(12)CH40.988274
6methaneCH42(13)CH40.0111031
6methaneCH43(12)CH3D0.000615751
6methaneCH44(13)CH3D0.00000691785
7oxygenO21(16)O(16)O0.995262
7oxygenO22(16)O(18)O0.00399141
7oxygenO23(16)O(17)O0.000742235
8nitric oxideNO1(14)N(16)O0.993974
8nitric oxideNO2(15)N(16)O0.00365431
8nitric oxideNO3(14)N(18)O0.00199312
9sulfur dioxideSO21(32)S(16)O20.945678
9sulfur dioxideSO22(34)S(16)O20.0419503
10nitrogen dioxideNO21(14)N(16)O20.991616
11ammoniaNH31(14)NH30.995872
11ammoniaNH32(15)NH30.00366129
12nitric acidHNO31H(14)N(16)O30.98911
13hydroxyl radicalOH1(16)OH0.997473
13hydroxyl radicalOH2(18)OH0.00200014
13hydroxyl radicalOH3(16)OD0.000155371
14hydrogen fluorideHF1H(19)F0.999844
15hydrogen chlorideHCl1H(35)Cl0.757587
15hydrogen chlorideHCl2H(37)Cl0.242257
16hydrogen bromideHBr1H(79)Br0.506781
16hydrogen bromideHBr2H(81)Br0.493063
17hydrogen iodideHI1H(127)I0.999844
18monochlorine monoxideClO1(35)Cl(16)O0.755908
18monochlorine monoxideClO2(37)Cl(16)O0.24172
19carbonyl sulfideOCS1(16)O(12)C(32)S0.937395
19carbonyl sulfideOCS2(16)O(12)C(34)S0.0415828
19carbonyl sulfideOCS3(16)O(13)C(32)S0.0105315
19carbonyl sulfideOCS4(16)O(12)C(33)S0.00739908
19carbonyl sulfideOCS5(18)O(12)C(32)S0.00187967
20formaldehydeH2CO1H2(12)C(16)O0.986237
20formaldehydeH2CO2H2(13)C(16)O0.0110802
20formaldehydeH2CO3H2(12)C(18)O0.00197761
21hypochlorous acidHOCl1H(16)O(35)Cl0.75579
21hypochlorous acidHOCl2H(16)O(37)Cl0.241683
22nitrogenN21(14)N20.992687
23hydrogen cyanideHCN1H(12)C(14)N0.985114
23hydrogen cyanideHCN2H(13)C(14)N0.0110676
23hydrogen cyanideHCN3H(12)C(15)N0.00362174
24methyl chlorideCH3Cl1(12)CH3(35)Cl0.748937
24methyl chlorideCH3Cl2(12)CH3(37)Cl0.239491
25hydrogen peroxideH2O21H2(16)O20.994952
26acetyleneC2H21(12)C2H20.977599
26acetyleneC2H22(12)C(13)CH20.0219663
27ethaneC2H61(12)C2H60.97699
27ethaneC2H62(13)C(12)CH60.0219526
28phosphinePH31(30)PH30.999533
29carbonic difluorideCOF21(12)C(16)O(19)F20.986544
30sulfur hexafluorideSF61(32)S(19)F60.95018
31hydrogen sulfideH2S1H2(32)S0.949884
31hydrogen sulfideH2S2H2(34)S0.0421369
31hydrogen sulfideH2S3H2(33)S0.00749766
32formic acidHCOOH1H(12)C(16)O(16)OH0.983898
33hydroperoxy radicalHO21H(16)O20.995107
34atomic oxygenO1(16)O0.997628
35chlorine nitrateClONO21(35)Cl(16)ON(16)O20.74957
35chlorine nitrateClONO22(37)Cl(16)ON(16)O20.239694
36nitric oxide+1NO+1(14)N(16)O0.993974
37hypobromous acidHOBr1H(16)O(79)Br0.505579
37hypobromous acidHOBr2H(16)O(81)Br0.491894
38ethyleneC2H41(12)C2H40.977294
38ethyleneC2H42(12)C(13)CH40.0219595
39methanolCH3OH1(12)CH3(16)OH0.98593
40methyl bromideCH3Br1(12)CH3(79)Br0.500995
40methyl bromideCH3Br2(12)CH3(81)Br0.487433
41methyl cyanideCH3CN1(12)CH3(12)C(14)N0.973866
42carbon tetrafluorideCF41(12)C(19)F40.98889



HITRAN2004 Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
1waterH2O2H(18)OH0.00199983
1waterH2O3H(17)OH0.000371884
1waterH2O4HD(16)O0.000310693
1waterH2O5HD(18)O0.000000623003
1waterH2O6HD(17)O0.000000115853
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
3ozoneO31(16)O(16)O(16)O0.992901
3ozoneO32(16)O(16)O(18)O0.00398194
3ozoneO33(16)O(18)O(16)O0.00199097
3ozoneO34(16)O(16)O(17)O0.000740475
3ozoneO35(16)O(17)O(16)O0.000370237
4nitrous oxideN2O1(14)N(14)N(16)O0.990333
4nitrous oxideN2O2(14)N(15)N(16)O0.00364093
4nitrous oxideN2O3(15)N(14)N(16)O0.00364093
4nitrous oxideN2O4(14)N(14)N(18)O0.00198582
4nitrous oxideN2O5(14)N(14)N(17)O0.00036928
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292
6methaneCH41(12)CH40.988274
6methaneCH42(13)CH40.0111031
6methaneCH43(12)CH3D0.000615751
7oxygenO21(16)O(16)O0.995262
7oxygenO22(16)O(18)O0.00399141
7oxygenO23(16)O(17)O0.000742235
8nitric oxideNO1(14)N(16)O0.993974
8nitric oxideNO2(15)N(16)O0.00365431
8nitric oxideNO3(14)N(18)O0.00199312
9sulfur dioxideSO21(32)S(16)O20.945678
9sulfur dioxideSO22(34)S(16)O20.0419503
10nitrogen dioxideNO21(14)N(16)O20.991616
11ammoniaNH31(14)NH30.995872
11ammoniaNH32(15)NH30.00366129
12nitric acidHNO31H(14)N(16)O30.98911
13hydroxyl radicalOH1(16)OH0.997473
13hydroxyl radicalOH2(18)OH0.00200014
13hydroxyl radicalOH3(16)OD0.000155371
14hydrogen fluorideHF1H(19)F0.999844
15hydrogen chlorideHCl1H(35)Cl0.757587
15hydrogen chlorideHCl2H(37)Cl0.242257
16hydrogen bromideHBr1H(79)Br0.506781
16hydrogen bromideHBr2H(81)Br0.493063
17hydrogen iodideHI1H(127)I0.999844
18monochlorine monoxideClO1(35)Cl(16)O0.755908
18monochlorine monoxideClO2(37)Cl(16)O0.24172
19carbonyl sulfideOCS1(16)O(12)C(32)S0.937395
19carbonyl sulfideOCS2(16)O(12)C(34)S0.0415828
19carbonyl sulfideOCS3(16)O(13)C(32)S0.0105315
19carbonyl sulfideOCS4(16)O(12)C(33)S0.00739908
19carbonyl sulfideOCS5(18)O(12)C(32)S0.00187967
20formaldehydeH2CO1H2(12)C(16)O0.986237
20formaldehydeH2CO2H2(13)C(16)O0.0110802
20formaldehydeH2CO3H2(12)C(18)O0.00197761
21hypochlorous acidHOCl1H(16)O(35)Cl0.75579
21hypochlorous acidHOCl2H(16)O(37)Cl0.241683
22nitrogenN21(14)N20.992687
23hydrogen cyanideHCN1H(12)C(14)N0.985114
23hydrogen cyanideHCN2H(13)C(14)N0.0110676
23hydrogen cyanideHCN3H(12)C(15)N0.00362174
24methyl chlorideCH3Cl1(12)CH3(35)Cl0.748937
24methyl chlorideCH3Cl2(12)CH3(37)Cl0.239491
25hydrogen peroxideH2O21H2(16)O20.994952
26acetyleneC2H21(12)C2H20.977599
26acetyleneC2H22(12)C(13)CH20.0219663
27ethaneC2H61(12)C2H60.97699
28phosphinePH31(30)PH30.999533
29carbonic difluorideCOF21(12)C(16)O(19)F20.986544
30sulfur hexafluorideSF61(32)S(19)F60.95018
31hydrogen sulfideH2S1H2(32)S0.949884
31hydrogen sulfideH2S2H2(34)S0.0421369
31hydrogen sulfideH2S3H2(33)S0.00749766
32formic acidHCOOH1H(12)C(16)O(16)OH0.983898
33hydroperoxy radicalHO21H(16)O20.995107
34atomic oxygenO1(16)O0.997628
35chlorine nitrateClONO21(35)Cl(16)ON(16)O20.74957
35chlorine nitrateClONO22(37)Cl(16)ON(16)O20.239694
36nitric oxide+1NO+1(14)N(16)O0.993974
37hypobromous acidHOBr1H(16)O(79)Br0.505579
37hypobromous acidHOBr2H(16)O(81)Br0.491894
38ethyleneC2H41(12)C2H40.977294
38ethyleneC2H42(12)C(13)CH40.0219595
39methanolCH3OH1(12)CH3(16)OH0.98593



GEISA2003 Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
1waterH2O2H(18)OH0.00199983
1waterH2O3H(17)OH0.000371884
1waterH2O4HD(16)O0.000310693
1waterH2O5HD(18)O0.000000623003
1waterH2O6HD(17)O0.000000115853
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
2carbon dioxideCO27(18)O(12)C(18)O0.00000395734
2carbon dioxideCO28(17)O(12)C(18)O0.0000014718
3ozoneO31(16)O(16)O(16)O0.992901
3ozoneO32(16)O(16)O(18)O0.00398194
3ozoneO33(16)O(18)O(16)O0.00199097
3ozoneO34(16)O(16)O(17)O0.000740475
3ozoneO35(16)O(17)O(16)O0.000370237
4nitrous oxideN2O1(14)N(14)N(16)O0.990333
4nitrous oxideN2O2(14)N(15)N(16)O0.00364093
4nitrous oxideN2O3(15)N(14)N(16)O0.00364093
4nitrous oxideN2O4(14)N(14)N(18)O0.00198582
4nitrous oxideN2O5(14)N(14)N(17)O0.00036928
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292
6methaneCH41(12)CH40.988274
6methaneCH42(13)CH40.0111031
6methaneCH43(12)CH3D0.000615751
7oxygenO21(16)O(16)O0.995262
7oxygenO22(16)O(18)O0.00399141
7oxygenO23(16)O(17)O0.000742235
8nitric oxideNO1(14)N(16)O0.993974
8nitric oxideNO2(15)N(16)O0.00365431
8nitric oxideNO3(14)N(18)O0.00199312
9sulfur dioxideSO21(32)S(16)O20.945678
9sulfur dioxideSO22(34)S(16)O20.0419503
10nitrogen dioxideNO21(14)N(16)O20.991616
11ammoniaNH31(14)NH30.995872
11ammoniaNH32(15)NH30.00366129
12nitric acidHNO31H(14)N(16)O30.98911
13hydroxyl radicalOH1(16)OH0.997473
13hydroxyl radicalOH2(18)OH0.00200014
13hydroxyl radicalOH3(16)OD0.000155371
14hydrogen fluorideHF1H(19)F0.999844
15hydrogen chlorideHCl1H(35)Cl0.757587
15hydrogen chlorideHCl2H(37)Cl0.242257
16hydrogen bromideHBr1H(79)Br0.506781
16hydrogen bromideHBr2H(81)Br0.493063
17hydrogen iodideHI1H(127)I0.999844
18monochlorine monoxideClO1(35)Cl(16)O0.755908
18monochlorine monoxideClO2(37)Cl(16)O0.24172
19carbonyl sulfideOCS1(16)O(12)C(32)S0.937395
19carbonyl sulfideOCS2(16)O(12)C(34)S0.0415828
19carbonyl sulfideOCS3(16)O(13)C(32)S0.0105315
19carbonyl sulfideOCS4(16)O(12)C(33)S0.00739908
19carbonyl sulfideOCS5(18)O(12)C(32)S0.00187967
20formaldehydeH2CO1H2(12)C(16)O0.986237
20formaldehydeH2CO2H2(13)C(16)O0.0110802
20formaldehydeH2CO3H2(12)C(18)O0.00197761
21hypochlorous acidHOCl1H(16)O(35)Cl0.75579
21hypochlorous acidHOCl2H(16)O(37)Cl0.241683
22nitrogenN21(14)N20.992687
23hydrogen cyanideHCN1H(12)C(14)N0.985114
23hydrogen cyanideHCN2H(13)C(14)N0.0110676
23hydrogen cyanideHCN3H(12)C(15)N0.00362174
24methyl chlorideCH3Cl1(12)CH3(35)Cl0.748937
24methyl chlorideCH3Cl2(12)CH3(37)Cl0.239491
25hydrogen peroxideH2O21H2(16)O20.994952
26acetyleneC2H21(12)C2H20.977599
26acetyleneC2H22(12)C(13)CH20.0219663
27ethaneC2H61(12)C2H60.97699
28phosphinePH31(30)PH30.999533
29carbonic difluorideCOF21(12)C(16)O(19)F20.986544
30sulfur hexafluorideSF61(32)S(19)F60.95018
31hydrogen sulfideH2S1H2(32)S0.949884
31hydrogen sulfideH2S2H2(34)S0.0421369
31hydrogen sulfideH2S3H2(33)S0.00749766
32formic acidHCOOH1H(12)C(16)O(16)OH0.983898
33hydroperoxy radicalHO21H(16)O20.995107
35chlorine nitrateClONO21(35)Cl(16)ON(16)O20.74957
35chlorine nitrateClONO22(37)Cl(16)ON(16)O20.239694
38ethyleneC2H41(12)C2H40.977294
38ethyleneC2H42(12)C(13)CH40.0219595
73propaneC3H81C3H81



HITEMP Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317
2carbon dioxideCO21(16)O(12)C(16)O0.984204
2carbon dioxideCO22(16)O(13)C(16)O0.0110574
2carbon dioxideCO23(16)O(12)C(18)O0.00394707
2carbon dioxideCO24(16)O(12)C(17)O0.000733989
2carbon dioxideCO25(16)O(13)C(18)O0.0000443446
2carbon dioxideCO26(16)O(13)C(17)O0.00000824623
2carbon dioxideCO27(18)O(12)C(18)O0.00000395734
2carbon dioxideCO28(17)O(12)C(18)O0.0000014718
5carbon monoxideCO1(12)C(16)O0.986544
5carbon monoxideCO2(13)C(16)O0.0110836
5carbon monoxideCO3(12)C(18)O0.00197822
5carbon monoxideCO4(12)C(17)O0.000367867
5carbon monoxideCO5(13)C(18)O0.000022225
5carbon monoxideCO6(13)C(17)O0.00000413292



HITEMP Supplemental Top of Page
 Molecule No. 
 Name 
  Formula  
 Isotopologue No. 
 Formula 
 Abundance 
1waterH2O1H(16)OH0.997317