Newsletter of the Western Vintage Oil and Gas Collectors Club, an Alberta based club for those interested in Canadian sevice stations and their artefacts See also CSSMA
Air at atmospheric conditions at any specific location Atmospheric air varies according to altitude, barometric pressure, and temperature
Air at atmospheric conditions at any specific location Because the altitude, barometer, and temperature may vary at different localities and at different times, it follows that this term does not mean air under identical or standard conditions
Air at atmospheric conditions at any specific location Since altitude, barometric pressure, temperature and relative humidity may vary at different localities, it follows that a cubic foot of free air will always be a cubic foot but its temperature, density (weight), and composition may vary