data = [ {month: "January", series1: 10, series2: 20}, {month: "February", series1: 20, series2: 30}, {month: "March", series1: 30, series2: 40}, {month: "April", series1: 40, series2: 50}, {month: "May", series1: 50, series2: 60}, {month: "June", series1: 60, series2: 70} ]