The bar chart illustrates the minimum and maximum concentration of two types of pollutants, SO2 and N2O, in four different cities. These cities include Los Angeles, Calcutta, Beijing and Mexico City. The units are given in micrograms per cubic meter.
Overall, Mexico City recorded the highest levels of both SO2 and N2O, while Los Angeles had the lowest. However, there is significant variation in pollution levels across all four cities.
In Los Angeles, SO2 levels were between 2 and 10 micrograms, which was the lowest among all cities. Meanwhile, N2O ranged from 39 to 104 micrograms. In Calcutta, SO2 levels fluctuated between 47 and 59, while N2O was lower, ranging from 30 to 52. Similarly, Beijing showed a wide range of SO2 levels, from 25 to 100, and its N2O concentration varied from 14 to 54.
Mexico City, in contrast, had the highest pollution levels. SO2 ranged from 80 to 200, while N2O was measured between 113 and 207, making it the most polluted city among the four.
To conclude, Mexico City experienced the highest amount of air pollution, while Los Angeles had the least. The levels of SO2 and N2O were different in each city, showing a trend that indicates some cities had better air quality than others.