Annex A (informative) Aggregate Specific examples – Historical Access 
A.38 VariancePopulation
A.38.2 VariancePopulation data
| Historian1 | |||
|---|---|---|---|
| Timestamp | Value | StatusCode | Notes |
| 12:00:00.000 | 0 | Good, Calculated, Partial | |
| 12:00:20.000 | 25 | Good, Calculated | |
| 12:00:40.000 | 0 | UncertainDataSubNormal, Calculated | |
| 12:01:00.000 | 0 | UncertainDataSubNormal, Calculated | |
| 12:01:20.000 | 25 | Good, Calculated, Partial |
| Historian2 | |||
|---|---|---|---|
| Timestamp | Value | StatusCode | Notes |
| 12:00:00.000 | 0 | Good, Calculated, Partial | |
| 12:00:20.000 | 16.667 |
Good, Calculated | |
| 12:00:40.000 | 25 | UncertainDataSubNormal, Calculated | |
| 12:01:00.000 | 0 | UncertainDataSubNormal, Calculated | |
| 12:01:20.000 | 66.667 |
Good, Calculated, Partial |
| Historian3 | |||
|---|---|---|---|
| Timestamp | Value | StatusCode | Notes |
| 12:00:00.000 | 0 | Good, Calculated, Partial | |
| 12:00:20.000 | 16.667 |
Good, Calculated | |
| 12:00:40.000 | 25 | UncertainDataSubNormal, Calculated | |
| 12:01:00.000 | 0 | UncertainDataSubNormal, Calculated | |
| 12:01:20.000 | 66.667 |
Good, Calculated, Partial |