Boxplot zones using median as threshold
For boxplot chart, when setting zones, highcharts uses the high value as threshold.
It could be great to be able to configure highchart to use a different value (median for example)
Thanks for sharing the idea!
Created a simple plugin to achieve that: https://jsfiddle.net/BlackLabel/3bzcasL7/
Now set `series.zoneKey` and you can use one of: "low", "q1", "median", "q2", "high" values.