Hey I was wondering there was a way to plot two series' on a line chart that have different intervals. A simple example could be the following:

Series 1:
Day: 1 Sales: 50
Day: 3 Sales: 25
Day: 4 Sales: 55
Day: 6 Sales: 60

Series 2:
Day: 1 Sales: 45
Day: 2 Sales: 35
Day: 4 Sales: 55
Day: 5 Sales: 70

How would one plot these so that the x-axis was the days and the chart would just skip the necessary days and plot the lines with the available data points?