The given bar chart illustrates the daily max and min extents of N2O and SO2 which caused air pollution in four major cities in 2000.
Overall, Mexico City was the most contaminated metropolitan with the highest figure in both two mentioned pollutants among the four cities.
It is apparent that Los Angeles was not affected by sulfur dioxide with insignificant indicators at 2 and 3 micrograms per m^3 at minimum and maximum, correspondingly. Conversely, the numbers for min and max levels of N2O were pretty high at 39 micrograms per m^3 at the minimum and the maximum was appropriately 3 times higher than the minimum figure. Next, It is worth noting that Mexico City was the most contaminated city with the extent of N2O and SO2 emissions were 200 and 207 micrograms per m^3, respectively.
Successively, it is striking that the amount of emission caused by N2O in the two remaining cities was lower than that caused by SO2. The daily average of SO2 in Calcutta was 59 micrograms per m^3 and in Beijing was 100 micrograms per m^3 while both its indicators in the extent of NO2 in the air were over 50 micrograms per m^3.