The peak value for the measurement period. This should be the maximal value for abs(sample) over all the samples in the period.
The size of the measurement period, in the same units as period_start.
The start of the measurement period. This is just a running counter that is only meaningful in comparison to previous values and must not be interpreted as an absolute time.
Peak data for a slice of time, the update format for ui:peakProtocol.