Critical State Properties
               Fluid      Tc [K]     Pc [Pa]          Zc
       carbondioxide        304.2    7.384E+06      0.2769
              oxygen        154.6    5.043E+06      0.2879
               water        647.3    2.209E+07      0.2333
            nitrogen        126.2      3.4E+06      0.2891
             heptane        537.7     2.62E+06      0.2972
            hydrogen        32.94    1.284E+06      0.3013
             methane        190.6    4.599E+06      0.2904
