It was possible in the legacy charts to use certain chart values as performance measures. While I recognize that this is no longer the case with the new statistics system (How to set up Experiments with new graphs and stats collector), this capability helped to reduce the amount of time/code necessary to create an experiment. The idea would be to add the capability to get the average, min, max, and count of a column in the statistics collector or calculated table within the GUI of the performance measures in the experimenter.