Okla. Stat. tit. 52, § 52-472: Terms defined - Pressure - Conversion to standard

conditions.

The term "cubic foot of gas" or "standard cubic foot of gas"

means the volume of gas, including both natural gas and casing head

gas, contained in one cubic foot of space at a standard pressure

base and at a standard temperature base. The standard pressure base

shall be fourteen and sixty-five hundredths (14.65) pounds per

square inch absolute and the standard temperature base shall be

sixty (60) degrees Fahrenheit. Whenever the conditions of pressure

and temperature differ from the above standard, conversion of the

volume from these conditions to the standard conditions shall be

made in accordance with the Ideal Gas Laws corrected for deviation

from Boyle's Law, which correction must be made unless the pressure

at the point of measurement is two hundred (200) pounds per square

inch gauge or less; all in accordance with methods and tables

generally recognized by and commonly used in the natural gas

industry.