Currently the Control Chart only shows the median (50% percentile) as a value above the chart. Normally Kanban scatter plot charts also display the percentile for 25, 75, 85, 95 and 99% which are also shown as lines in the chart. This should be added to the JIRA Control Chart.

Kanbanize has added this to their charts, which I see a serious competitor to JIRA Software. Atlassian needs to up their game in developing new Kanban features.