WITSML - Chromatographic Component Schema The date and time at which the gas sample was processed. Measured depth at top of Interval. Measured depth at base of interval. Mud density in (active pits). Mud density out (flowline). Chromatograph type. Chromatograph cycle time. Commonly in seconds. Chromatograph integrator report time, format may be variable due to recording equipment Methane (C1) ppm (average). Methane (C1) ppm (minimum). Methane (C1) ppm (maximum). Ethane (C2) ppm (average). Ethane (C2) ppm (minimum). Ethane (C2) ppm (maximum). Propane (C3) ppm (average). Propane (C3) ppm (minimum). Propane (C3) ppm (maximum). iso-Butane (iC4) ppm (average). iso-Butane (iC4) ppm (minimum). iso-Butane (iC4) ppm (maximum). nor-Butane (nC4) ppm (average). nor-Butane (nC4) ppm (minimum). nor-Butane (nC4) ppm (maximum). iso-Pentane (iC5) ppm (average). iso-Pentane (iC5) ppm (minimum). iso-Pentane (iC5) ppm (maximum). nor-Pentane (nC5) ppm (average). nor-Pentane (nC5) ppm (minimum). nor-Pentane (nC5) ppm (maximum). neo-Pentane (eC5) ppm (average). neo-Pentane (eC5) ppm (minimum). neo-Pentane (eC5) ppm (maximum). iso-Hexane (iC6) ppm (average). iso-Hexane (iC6) ppm (minimum). iso-Hexane (iC6) ppm (maximum). nor-Hexane (nC6) ppm (average). nor-Hexane (nC6) ppm (minimum). nor-Hexane (nC6) ppm (maximum). Carbon Dioxide ppm (average). Carbon Dioxide ppm (minimum). Carbon Dioxide ppm (maximum). Hydrogen Sulfide (average) ppm. Hydrogen Sulfide (minimum) ppm. Hydrogen Sulfide (maximum) ppm. Acetylene.