Backend stats not yet modeled here are passed through by the transform.
OptionalaverageAverage of the sample values.
OptionalcountNumber of samples in the window.
OptionalcumulativeConsumption within the window (cumulative params only).
OptionalfirstFirst sample value in the window.
OptionallastLast sample value in the window.
OptionalmaxMaximum sample value in the window.
OptionalminMinimum sample value in the window.
Optionalstatus"completed" for archived historical windows.
OptionalsumSum of the sample values.
OptionalwindowRFC3339 window end.
OptionalwindowRFC3339 window start.
Statistics of one aggregation window. For cumulative params, use
cumulativeValue(consumption within the window) rather thansum.