Issue: When viewing treatment train effectiveness results in music version 5 the peak flow reduction result may display a negative value.
Cause: This may occur when the node being view has multiple parent nodes. The sources field for Peak Flow retrieves the largest value from all parent nodes while the residual load retrieves the total residual load from all parent nodes. The image below further illustrates this:
Resolution: Where multiple parent nodes are present the % Reduction value for Peak Flow (m3/s) should not be used. The individual treatment train branches earlier in the model can be examined for correct peak flow % reduction metrics.