Notes:

• LTO_NOx is NOx emitted during the standard take-off and landing cycle in kg. The maximum allowable level is also shown. NOxExceedance is the difference (in kg). Note that the regulations do not currently reflect the benefits of improved airframe performance.
• NOx_kg is the total NOx emitted during the flight, including cruise.
• Total CO2 emissions are shown in metric tonnes as well as in kg per passenger km for comparison with other results.
• Data are based on a fit of modern (circa 2006) engines from the ICAO Engine Exhaust Emissions Data Bank (see notes).