11.1. Measurement Quality Checks
The effect of the data marked invalid by the BT filters on the computed discharge is evaluated using thethe total discharge estimated for all invalid ensembles and the discharge estimated in consecutive invalid ensembles. The resulting messages are preceded by BT- and the filter resulting in the warning message and by bt- and the filter resulting in the caution message. For example, All (BT-All), Original (BT-Original), Difference Velocity (BT-ErrorVel), Vertical Velocity (BT-VertVel), Other (BT-Other), and 3 Beams (BT-3Beams).
Good (Green)
Check—No filters exceeded prescribed thresholds.
Caution (Yellow)
Check—More than 10 percent of discharge is interpolated for ensembles with an invalid BT velocity due to specified filter.
Message—bt-filter: Interpolated discharge for invalid ensembles in a transect exceeds 10 percent.
Check—More than 3 percent of the discharge is interpolated for consecutive ensembles with an invalid BT velocity due to specified filter.
Message—bt-filter: Interpolated discharge for consecutive invalid ensembles exceeds 3 percent.
Warning (Red)
Check—More than 25 percent of the discharge is interpolated for ensembles with an invalid BT velocity due to specified filter.
Message—BT-filter: Interpolated discharge for invalid ensembles in a transect exceeds 25 percent.
Check—More than 5 percent of the discharge is interpolated for consecutive ensembles with an invalid BT velocity due to specified filter.
Message—BT-filter: Interpolated discharge for consecutive invalid ensembles exceeds 5 percent.