[[:file:formation-fluid-pressure-and-its-application_fig5-35.png|Figure 1]] illustrates the relationship of the variables H<sub>w</sub> and Z used in the above equation. | [[:file:formation-fluid-pressure-and-its-application_fig5-35.png|Figure 1]] illustrates the relationship of the variables H<sub>w</sub> and Z used in the above equation. |