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AVEVA™ Historian

AVERAGE examples

  • Last UpdatedFeb 07, 2025
  • 1 minute read

Example 1

The following expression returns the average flow rate of a pump.

AVERAGE(Pump101.Flow)

Example 2

The following expression returns the average flow rate of a pump over 10 minute intervals.

AVERAGE(Pump101.Flow, 10 Minute)

Example 3

The following expression returns the average flow rate of all streams that include ".Flow" in their tag name at 10 minute intervals.

AVERAGE(SELECT("TagName",".Flow"), 10 Minute)

Example 4

The following expression returns the average minute value of the time over 5 minute intervals.

AVERAGE(SysTimeMin, 5 minute)

Represented as a query:

SELECT DateTime, Value, OPCQuality

FROM History

WHERE wwExpression = 'AVERAGE( SysTimeMin, 5 minute )'

Results:

DateTime

Value

OPCQuality

2022-03-31 12:00:00.0000000

2

192

2022-03-31 12:05:00.0000000

7

192

2022-03-31 12:10:00.0000000

12

192

2022-03-31 12:15:00.0000000

17

192

...

...

...

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