The bar chart illustrates the average bottom and peak levels per day of two air contaminants in four cities, namely, Los Angeles, Calcutta, Beijing and Mexico in 2000.
The column graph delineates the highest and lowest contaminant rate caused by two ingredients (SO2 and N2O) in four urban areas, namely LA, Calcutta, Beijing, and Mexico in the year 2000.
Given is a column graph comparing the average daily amounts of the highest and the lowest levels of two air pollutants (namely Sulphur dioxide (SO2) and Dinitrous Oxid (N2O) ) in 4 different cities (Los Angeles, Calcutta