This uses the procedure for calculating heating value, specific gravity and compressibility factor from the compositional analysis of a natural gas mixture.
FLOCALC Calculation reference F038
Kelton calculation reference C103
API Measurement of petroleum standards Chapter 14.5
GPA 2172/API MPMS Ch 14.5 – Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures for Custody Transfer (2009)
- 14.696 psia
- 14.73 psia
- 14.7345 psia
Calculation as documented in standard.