Standard Air 1
Standard Air 1 : Air at standard temperature and pressure. The most common values are 70 F (21.1 C) and 29.92 in. Hg (101.3 kPa). Also, air with a density of 0.075 lb/ft3 (1.2 kg/m3) is substantially equivalent to dry air at 70 F and 29.92 in. Hg