Initial Pressure (atm) & Initial Pressure (kPa) & Critical Energy (J/cm) \\ 0.20 & 20.18 & 1045.392 \\ 0.25 & 25.64 & 810.26 \\ 0.40 & 40.52 & 628.662 \\ 0.50 & 50.45 & 467.6714 \\ 0.73 & 74.13 & 370.2198 \\ 0.82 & 83.13 & 334.3758 \\ 1.00 & 101.34 & 264.4858 \\