Tables are presented for the thermodynamic properties of air from 90 to 1500 0 K using (1) temperature and pressure and (2) temperature and density as independent variables. The pressure tables range from 1 to 1200 atmospheres, whereas the density tables extend from 10-7 to 400 relative atmospheres (or amagat units). The tabulated properties are the compressibility factor Z, the dimensionless functions E/RT, H/RT and SIR, together with pressure and density. The tables account for the so-called

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... eal gas effects, i. e., van der Waals 1 effects, at high pressures, but do not include the effects of the small amounts of dissociation at low pressures and high temperatures. The sources for the tables as well as the final tables are discussed.