# emission factor of individual passenger: 3.16
# T(tot): Total payload transport fuel consumption(Average Fuel Burn x range)
# P(pax/tot): Ratio of passenger weight to total payload weight
# N(seat): Total number of seats
# K(pax/seat): Ratio of seats occupied during flight
emission factor of airplane(kgCO2/kg) x is business class(true: 2, false: 1) x Average Fuel Burn(kg/km) x range(km) x P(pax/tot) ÷ (N(seat) x K(pax/seat))
