Output

Input

	Elevation		Fluid density at Logging reference point
	Logging reference point (usually at surface)		Fluid Compressibility at Logging reference point
	Standard gravity constant

p(z) = p_0 \cdot \exp \left[ - \frac{\rho_0 \, g}{p_0} \cdot (z-z_0) \right]

where

	Elevation		Gas pressure at Logging reference point
	Logging reference point (usually at surface)		Gas density at Logging reference point
	Standard gravity constant		Gas Compressibility at Logging reference point

p(z) = p_0 \cdot \exp \left[ - \frac{M }{R \, T} \cdot (z-z_0) \right]

where

	Elevation		Gas pressure at Logging reference point
	Logging reference point (usually at surface)		Gas molar mass
	Standard gravity constant		Gas temperature
			Gas constant

\frac{\rho_0}{p_0} =\frac{M}{R \, T}