Sometimes it helps a time series chart if you can highlight certain periods with a different color background. You may want to show financial performance over time, for example, and point out the periods when the economy was in a recession. In this example, I will use a simpler example, plotting the readership of this blog over the past couple months, and highlight weekends.
This is accommplished using a combination of a line series to show traffic with a column series to highlight weekends.
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