Fig. 4From: VOC emissions from Euro 6 vehiclesCumulative emissions of VOCs on WLTC for Diesel, gasoline and PHEV vehicles at − 7 °C (lighter colors) and 23 °C (darker colors). The solid line represents the average of the cumulative emissions obtained during WLTCs, while the bandwidth represents the maximum and minimum cumulative emissions among all the tests belonging to the specific vehicle category and environmental temperatureBack to article page