PivotChart (bar graph) of average with standard deviation as error

Priesemut 

After replying to Steve's suggestion, I thought of another approach.

Create a second pivot table: one has averages and standard deviations, the other just averages.

Make a pivot chart using the pivot table with averages only.

Using the approach Steve described (or that I wrote about in https://peltiertech.com/custom-error-bars-in-excel-charts/), use the standard deviations in the other pivot table to define custom error bars.

This approach makes the chart more dynamic if the pivot table reshapes itself during a refresh, though you may have to reapply the error bars after refreshing the pivot tables.