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The image presents nitrogen oxide emissions (g/km) against speed (kph) for diesel cars, petrol cars, lorries, and buses. Diesel cars start at 40 g/km at 10 kph, decreasing to about 8 g/km at 70 kph, then increasing steadily to 43 g/km at 130 kph. Petrol cars maintain relatively constant emissions from 5 g/km at 10 kph to around 8 g/km at 130 kph. Lorries start at 36 g/km at 10 kph, decline to a low of 16 g/km at about 70 kph, and rise to 33 g/km at 130 kph. Buses' emissions range from 11 g/km at 10 kph to 13 g/km at 130 kph, with a slight increase observed around 90 kph and above.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph illustartes information about nitrogen oxide emissions created by four cars namely, diesel, petrol, lorries, and buses.
Overall, it is clear that the amount of nitrogen oxide emissions produced by diesel and petrol remained stable, while lorries and buses dramatically dropped followed by a significant rise at the end.
Looking at the details, diesel cars were the highest contributors, producing approximately 7 units of nitrogen oxide emissions, and this level remained unchanged over time. Petrol cars followed a similar pattern, staying steady at a lower level of around 4 units.
In contrast, emissions from lorries and buses showed a more dynamic trend. Both started at relatively higher levels, then dropped significantly during the middle of the period. However, towards the end, there was a modest rise, although the figures remained lower than at the beginning.
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