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The image presents a line graph of nitrogen oxide emission (g/km) versus speed (kph) for four vehicles, with the y-axis ranging from 0 to 45 and the x-axis from 10 to 130. For the Diesel car, emissions in g/km at speeds of 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, and 130 kph are approximately: 6.5, 6, 5.5, 5.2, 5.1, 5, 5, 4.9, 4.9, 4.9, 4.8, 4.8, and 4.8. For the Petrol car, the corresponding emissions are: 11, 11.2, 10.5, 10, 10.1, 9.5, 9.5, 9, 9, 9.5, 10, 10.5, and 11.5. For Lorries, the emissions are: 33, 31, 29, 27, 25, 23, 20, 18, 16, 18, 20, 22, and 24. For Buses, the emissions are: 40, 37, 34, 32, 30, 26, 29, 32, 34, 36, 38, 40, and 42.
Given the complexity of the image, the above description may not be entirely accurate.
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The given graph illustrates how much nitrogen oxide is produced by four vechicles.
Overall, we can see that some vechicles produce much less nitrogen oxide than others. Also we can see that some vechicles’ nitrogen outputs depend on speed while others’ do not.
Diesel and petrol cars both produce between 5 to 15 g/km’s of nitrogen oxide. Their emmisions don’t change substantially with speeding as we can see that they both change at most 2-3 g/kms.
On the other hand, lorries as well as busses both emmit much more nitrogen oxide gas than the cars at between 15-35 and 25-45 g/km’s, respectively. Their emmisions depend on speed much more than the cars as we can see that the lorries peak at about 30 g/km at 10 kilometers per hour and lower their emmisions to 15 g/km at 90 kph to than highering their emmisions at about g/km at 130kmh. The same trend can be seen for busses too but at higher emmision rates and peaking at 130kmh rather than at 10kmh.
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