// Emissions Factors
		// These are the emissions factors for the calculator in the unit of kg per passenger kilometers travelled 
		
		var ef_bus = 0.07137;
		var ef_train = 0.1902;	
		var ef_car_highway_proportion = 0.45;
		var ef_car_city_proportion = 0.55;
		var ef_scooter_motorcycle_cc = 11.2;
		var ef_scooter_motorcycle_ncc = 9.3;
		var ef_scooter_motorcycle_dk = 10.25;
		var ef_gasoline = 0.00024; // tonnes per km
		var ef_diesel = 0.00027; // tonnes per km
		var ef_airplane_longhauljet_economy_cruise = 0.056;
		var ef_airplane_longhauljet_economy_lto = 16.575;
		var ef_airplane_longhauljet_executive_cruise = 0.105;
		var ef_airplane_longhauljet_executive_lto = 31.488;		
		var ef_airplane_longhauljet_notravelclass_cruise = ef_airplane_longhauljet_executive_cruise;
		var ef_airplane_longhauljet_notravelclass_lto = ef_airplane_longhauljet_executive_lto;
		var ef_airplane_longhauljet_dontknow_cruise = ef_airplane_longhauljet_executive_cruise;
		var ef_airplane_longhauljet_dontknow_lto = ef_airplane_longhauljet_executive_lto;	
		var ef_airplane_largejet_economy_cruise = 0.059;
		var ef_airplane_largejet_economy_lto = 13.528;
		var ef_airplane_largejet_executive_cruise = 0.084;
		var ef_airplane_largejet_executive_lto = 19.281;			
		var ef_airplane_largejet_notravelclass_cruise = 0.054;
		var ef_airplane_largejet_notravelclass_lto = 14.969;
		var ef_airplane_largejet_dontknow_cruise = ef_airplane_largejet_executive_cruise;
		var ef_airplane_largejet_dontknow_lto = ef_airplane_largejet_executive_lto;	
		var ef_airplane_regionaljet_economy_cruise = 0.081;
		var ef_airplane_regionaljet_economy_lto = 10.078;
		var ef_airplane_regionaljet_executive_cruise = ef_airplane_regionaljet_economy_cruise;
		var ef_airplane_regionaljet_executive_lto = ef_airplane_regionaljet_economy_lto;			
		var ef_airplane_regionaljet_notravelclass_cruise = ef_airplane_regionaljet_economy_cruise;
		var ef_airplane_regionaljet_notravelclass_lto = ef_airplane_regionaljet_economy_lto;
		var ef_airplane_regionaljet_dontknow_cruise = ef_airplane_regionaljet_economy_cruise;
		var ef_airplane_regionaljet_dontknow_lto = ef_airplane_regionaljet_economy_lto;				
		var ef_airplane_turboprop_economy_cruise = 0.050;
		var ef_airplane_turboprop_economy_lto = 6.173;
		var ef_airplane_turboprop_executive_cruise = ef_airplane_turboprop_economy_cruise;
		var ef_airplane_turboprop_executive_lto = ef_airplane_turboprop_economy_lto;			
		var ef_airplane_turboprop_notravelclass_cruise = ef_airplane_turboprop_economy_cruise;
		var ef_airplane_turboprop_notravelclass_lto = ef_airplane_turboprop_economy_lto;
		var ef_airplane_turboprop_dontknow_cruise = ef_airplane_turboprop_economy_cruise;
		var ef_airplane_turboprop_dontknow_lto = ef_airplane_turboprop_economy_lto;	
		var ef_airplane_smallregionaljet_economy_cruise = 0.050;
		var ef_airplane_smallregionaljet_economy_lto = 6.173;
		var ef_airplane_smallregionaljet_executive_cruise = ef_airplane_smallregionaljet_economy_cruise;
		var ef_airplane_smallregionaljet_executive_lto = ef_airplane_smallregionaljet_economy_lto;			
		var ef_airplane_smallregionaljet_notravelclass_cruise = ef_airplane_smallregionaljet_economy_cruise;
		var ef_airplane_smallregionaljet_notravelclass_lto = ef_airplane_smallregionaljet_economy_lto;
		var ef_airplane_smallregionaljet_dontknow_cruise = ef_airplane_smallregionaljet_economy_cruise;
		var ef_airplane_smallregionaljet_dontknow_lto = ef_airplane_smallregionaljet_economy_lto;	

		var ef_newspaper_recycling = -3.43;
		var ef_cardboard_recycling = -4.07;
		var ef_otherpaper_recycling = -4.10;
		var ef_aluminium_recycling = -7.92;
		var ef_othermetals_recycling = -7.92;
		var ef_glass_recycling = -0.12;
		var ef_hdpe_recycling = -2.77;
		var ef_pet_recycling = -4.43;
		var ef_foodscraps_composting = -0.29;
		var ef_yardwaste_composting = -0.29;
		var ef_newspaper_landfill = -1.49;
		var ef_cardboard_landfill = 0.35;
		var ef_otherpaper_landfill = 0.87;
		var ef_aluminium_landfill = 0.01;
		var ef_othermetals_landfill = 0.01;
		var ef_glass_landfill = 0.01;
		var ef_hdpe_landfill = 0.01
		var ef_pet_landfill = 0.01;
		var ef_foodscraps_landfill = 1.10;
		var ef_yardwaste_landfill = 1.10;
		var ef_newspaper_source = -4.65;
		var ef_cardboard_source = -6.37;
		var ef_otherpaper_source = -6.72;
		var ef_aluminum_source = -5.55;
		var ef_othermetals_source = 0.01;
		var ef_glass_source = -0.49;
		var ef_hdpe_source = -3.34;
		var ef_pet_source = -4.27;
		var ef_newspaper_proportion = 0.10;
		var ef_cardboard_proportion = 0.13;
		var ef_otherpaper_proportion = 0.05;
		var ef_aluminium_proportion = 0.01;
		var ef_othermetals_proportion = 0.01;
		var ef_glass_proportion = 0.05;
		var ef_hdpe_proportion = 0.08/2;
		var ef_pet_proportion = 0.08/2;
		var ef_foodscraps_proportion = 0.28;		
		var ef_yardwaste_proportion = 0.10;