Concentration sim_hydrology ParameterRaster|MASK|Mask|False ParameterRaster|GRAD|Gradient|False OutputRaster|CONC|Concentration ParameterNumber|CONC_IN|Inlet Concentration| 0.000000|None| 5.000000 ParameterNumber|CONC_OUT|Outlet Concentration| 0.000000|None| 3.000000 ParameterNumber|CONC_E|Concentration Approximation Threshold| 0.000000|None| 0.001000 ParameterNumber|GRAD_MIN|Minimum Gradient| 0.000000|None| 0.000000 ParameterSelection|NEIGHBOURS|Neighbourhood|[0] Moore (8);[1] Neumann (4);[2] Optimised| 0