A Highcharts column series with an error bar linked over it, made accessible by the MAIDR Highcharts adapter. Highcharts splits the reading across two series — the column places the estimate, the error bar draws the interval around it — and the adapter zips them back into one layer. Click on the chart and use left and right arrow keys to walk the months, and up and down at one month to walk the lower bound, the estimate and the upper bound.