Details regarding the structure of the Collision Induced Absorption (CIA) data available through HITRANonline is given in Ref. . 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".
Further supplementary files are also available for download by clicking the links below. Before using these supplementary files, we refer users to Ref.  and the readme files above for a thorough description.
 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.