V = IMV * IV
Where:
V = reported volume, Mcf
IMV = integral multiplier value, as calculated under this section
IV = the integral value determined by the integration process (also known as the "extension," "integrated extension," and "integrator count")
Where:
Cd = discharge coefficient or flow coefficient, calculated under API 14.3.3 or AGA Report No. 3 (1985), Section 5 (incorporated by reference, see § 3175.30 )
[BETA] = Beta ratio
Y = gas expansion factor, calculated under API 14.3.3, Subsection 5.6 or AGA Report No. 3 (1985), Section 5 (incorporated by reference, see § 3175.30 )
d = orifice diameter, in inches
Zb = supercompressibility at base pressure and temperature
Gr = relative density (specific gravity)
Zf = supercompressibility at flowing pressure and temperature
Tf = average flowing temperature, in degrees Rankine
43 C.F.R. §3175.94