Loads the parameter ID table
paraIDs()Columns: parameter: full German Parameter Name id_infoworks: parameter ID in Infoworks (mf = mass flow) unit_infoworks: unit of the infoworks output (mass flow) constant_value: parameters that are not simulated by infoworks and are set to a constant value unit is the same as in gerris (see column "unit_gerris") id_gerris: parameter ID in Gerris unit_gerris: unit needed for Gerris input (concentration) min_gerris and max_gerris: tolerated range of parameter in Gerris model comment: possibility to add comments (column not used by r-script)