Table 3-8. Validation of O2 and CO2 Measurement Data

                   Run    O2     CO2    Calculated
                   No.   (%d)   (%d)        Fo
                   ---   ----   ----    ----------
                    1    15.1    3.3       1.76
                    2    15.1    3.3       1.76
                    3    15.1    3.4       1.71

                   Calculated Fo = (20.9-%O2) / %CO2
         
                   EPA Method 3 acceptance criteria,
                      Fo range:  1.64 - 1.88 for natural gas