I wan to fill the overlapping line charts with colors say there is the time series on the x-axis and the two lines are the speed of the car and speed limit of the road, I want fill just the over speeding area with red. How can I do that?
You can use Range Area Chart to achieve your requirement. Range Area Charts have two y-values, out of which one can be the speed of the car and other can be the speed limit of the road.