Details regarding the structure of the Collision Induced Absorption (CIA) data available through HITRANonline is given in Ref. [1]. Further descriptions of the content and format of the CIA files is described in the following readme document, with corresponding reference sources given in the reference document:

The following CIA data are available to download by clicking the appropriate download icon (), and selecting "Save File".
 

System νmin/cm-1 νmax/cm-1 Filename Download
H2–CH4 (equilibrium) 0 1 946 H2-CH4_eq_2011.cia
H2–CH4 (normal) 0 1 946 H2-CH4_norm_2011.cia
H2–H2 20 10 000 H2-H2_2011.cia
H2–H 100 11 000 H2-H_2011.cia
H2–He 20 20 000 H2-He_2011.cia
He–H 50 11 000 He-H_2011.cia
N2–H2 0 1 886 N2-H2_2011.cia
N2–He 1 1 000 N2-He_2018.cia
N2–N2 0 5 000 N2-N2_2018.cia
N2–air 1 850 5 000 N2-air_2018.cia
N2–H2O 1 930 2 830 N2-H2O_2018.cia
O2–CO2 12 600 13 839 O2-CO2_2011.cia
O2–N2 1 850 13 840 O2-N2_2018.cia
O2–O2 1 150 29 800 O2-O2_2018.cia
O2–air 7 450 13 839 O2-Air_2018.cia
CO2–CO2 1 2 850 CO2-CO2_2018.cia
CO2–H2 0 2 000 CO2-H2_2018.cia
CO2–He 0 1 000 CO2-He_2018.cia
CO2–CH4 1 2 000 CO2-CH4_2018.cia
CH4–He 1 1 000 CH4-He_2018.cia
Note: The upper and lower wavenumber limits refer to the complete region covered by the CIA file

Supplementary files in Alternate folder

Further supplementary files are also available for download by clicking the links below. Before using these supplementary files, we refer users to Ref. [1] and the readme files above for a thorough description.

References

[1] T. Karman, I. E. Gordon, A. van der Avoird, Y. I. Baranov, C. Boulet, B. J. Drouin, et al., "Update of the HITRAN collision-induced absorption section", Icarus in press (2019). doi: 10.1016/j.icarus.2019.02.034.