Variable descriptions:

RS_Zurich_data.csv
Country: 		country of the RS campaign	
city:    		city of the RS campaign
Year:    		year of the RS campaign
CampaignID: 		unique ID for each RS campaign (one city could include multiple campaigns) 	
SiteID:     		site ID for each measurement site (one campaign could include multiple sites) 		
RoadGrade:  		road grade at the measurement site 	
RoadTypeName: 	     	description of road type	
SiteDescription: 	description of site type	
VehiclePassageID: 	unique ID for each passed vehicle	
PassageTime:      	time of the vehicle passage	
FuelType:         	fuel type of the vehicle 
EmissionStandard: 	emission standard of the vehicle 	
AmbientTemperature: 	ambient temperature of the measurement condition 
Percent_CO2: 		instantaneous CO2 (unit: percent) 	
PPM_NO:			instantaneous NO (unit: parts per million) 
PPM_NO2:                 instantaneous NO2 (unit: parts per million) 	
Ratio_NO_CO2_corrected:  instantaneous NO/CO2 ratio 	
Ratio_NO2_CO2_corrected: instantaneous NO2/CO2 ratio 	
gNO_kgfuel:              instantaneous emission factor (g NO/ kg fuel)	
gNO2_kgfuel:	        instantaneous emission factor (g NO2/ kg fuel)		
mean_no_nox_ratio:       average ratio between NO and NOx	 	
gNOx_kgfuel:             instantaneous emission factor (g NOx/ kg fuel), main variable	
speedmps:                vehicle speed (meter per second)	
acc:                     vehicle acceleration (meter per second^2)		
vsp:                     vehicle specific power (kW/ton)	
temp_label:              label of ambient temperature


sample_pems_chassis_cycles.csv
ID_Vehicle:	         unique ID for vehicle in the test cycle
EU_emis_standard:         emission standard for each vehicle	
ID_Test:                  unique ID for each test cycle (each vehicle could be tested multiple times)	
Test_Type:                type of the test	
CycleEvalName:            name of the test cycle	
Time:                     time in the test cycle (unit: second)	
speed_km_h:               vehicle speed (km/hour)	
acc:                      vehicle acceleration (km/hour/second)		
speed_ma3:                3-second moving average of vehicle speed	
acc_ma3:                  3-second moving average of vehicle acceleration	
vsp:                      vehicle specific power (kW/ton)	
vsp_ma3:                  3-second moving average of vehicle specific power	
CO2:                      instantaneous CO2 (unit: gram)	
NOx:                      instantaneous NOx (unit: gram)		
co2_ma3:                  3-second CO2 (unit: gram)	
nox_ma3:                  3-second NOx (unit: gram)	
fuel:                     diesel usage associated with the instantaneous CO2 (kg diesel)	
fuel_ma3:                 diesel usage associated with the 3-second CO2 (kg diesel)
nox_fuel:                 instantaneous NOx emission factor (g NOx per kg fuel)	
nox_fuel_ma3:             3-second NOx emission factor (g NOx per kg fuel)	
temperature:              instantaneous temperature at the measurement conditions	
average_temperature:      average temperature over the entire test cycle