The bar charts shown here represents the earnings of a Sales executive Mohit. Bar-chart (1) gives us the details of his earnings in the four quarters of the year across the five regions—West, North, South, East and Central. Bar chart (2) gives the details of his total earning in the four quarters in three different years. Bar-chart (1) is applicable for bar chart (2)and vice-versa.
What is the maximum difference between any two regional earnings in any quarter?