Multiple time series

Multiple time series should not be presented using bar charts. Use a line chart to make sure the trends in the series are clear. Use points on a line to highlight individual data points, to read specific values or highlight when the data were sampled.


Example of line chart to show multiple time series

A line chart with data points highlighted for easy comparison, showing a blue line for England and an orange line for Wales.

Do not

Example of bar chart to show multiple time series

A bar chart with a blue bar for England and orange bar for Wales, where it is more difficult to compare the differences in the data.