timespan for which derived values are produced based on a specified Aggregate

Note 1 to entry: The total time domain specified for ReadProcessed is divided by the ProcessingInterval. For example, performing a 10-minute Average over the time range 12:00 to 12:30 would result in a set of three intervals of ProcessingInterval length, with each interval having a start time of 12:00, 12:10 and 12:20 respectively. The rules used to determine the interval Bounds are discussed in 5.4.2.2.