Natural gas shall be measured for sale to the consumer on the basis of the temperature, pressure and humidity existing in the meter at the time the gas is measured, unless, by agreement between buyer and seller, a pressure higher than eight ounces gauge is maintained at the outlet of the meter. In the latter case, the volume measured shall be corrected to a pressure base of eight ounces above 14.43 pounds per square inch.
(1964 Code, § 17-6)