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.
During which year and quarter the earnings from the north Region have shown maximum change over the previous quarter in that year?