Fixed in Part 13 Draft 5

Values in the aggregate were calculated incorrectly and have been corrected.

Please check the calculations from the CTT. They differ from what I have and listed in this issue (for all historian examples).

There are two things to keep in mind with these calculations -

1. Uncertain data does not affect the calculations
   • 5.4.3.31 DurationGood - divides the interval into regions of Good and non-Good data.
   • 5.4.3.32 DurationBad - divides the interval into regions of Bad and non-Bad data.
2. Intervals allow for durations of 1.
   5.4.2.4 Time calculation issues - If there is one data point in the Interval and it falls on the StartTime the time duration used in calculations is one unit of the time resolution of the Server.

PercentGood and DurationGood use SimpleBounds to determine Values for each interval

Historian One

12:00:32.000 Calculation

GetSimpleValues

• Value = Data Value status UncertainDataSubNormal [0402] timestamp 2022-01-01 12:00:32 AM value 30
• Value = Data Value status Bad timestamp 2022-01-01 12:00:40 AM value 40
• Value = Data Value status BadNoData timestamp 2022-01-01 12:00:48 AM value (null)

Time Regions

• Duration 8000 StartValue 30 EndValue 30 start time 12:00:32 AM status UncertainDataSubNormal [0402]
• Duration 8000 StartValue 30 EndValue 30 start time 12:00:40 AM status Bad

DurationGood = 0
DurationBad = 8000

PercentGood = 0
PercentBad = 50

12:01:04.000 Calculation

GetSimpleValues

• Value = Data Value status UncertainDataSubNormal [0402] timestamp 2022-01-01 12:01:04 AM value 64
• Value = Data Value status Uncertain timestamp 2022-01-01 12:01:10 AM value 70
• Value = Data Value status Good timestamp 2022-01-01 12:01:20 AM value 80

  Time Regions

• Duration 6000 StartValue 64 EndValue 64 start time 12:01:04 AM status UncertainDataSubNormal [0402]
• Duration 10000 StartValue 70 EndValue 70 start time 12:01:10 AM status Uncertain

DurationGood = 0
DurationBad = 0

PercentGood = 0
PercentBad = 0

12:01:20.000 Calculation

GetSimpleValues

• Value = Data Value status Good timestamp 2022-01-01 12:01:20 AM value 80
• Value = Data Value status Good timestamp 2022-01-01 12:01:30 AM value 90
• Value = Data Value status BadNoData timestamp 2022-01-01 12:01:36 AM value (null)

Time Regions

• Duration 10000 StartValue 80 EndValue 80 start time 12:01:20 AM status Good
• Duration 1 StartValue 90 EndValue 90 start time 12:01:30 AM status Good

Last Raw value of 90 at 12:01:30 meets the criteria of If there is one data point in the Interval and it falls on the StartTime the time duration used in calculations is one unit of the time resolution of the Server.

DurationGood = 10001
DurationBad = 0

PercentGood = 100
PercentBad = 0

Both the Original test tool and the CTT follow these calculations.
If desired, more data can be provided for the remaining datasets, but this should be enough to provide a conversation about how to calculate these values.

Recalculated values and original values are correct.

No change needed.

Agreed to no change required in VirtualF2F.