separates pathways (rain runoff, CSO and WWTP)
annual_load_rain(data.dir, error_removal_rate = 0.3)
path of model data (annual mean concentrations "annual_mean_conc.csv", rain runoff volumes "Vol_rain.csv", removal at WWTP "substance_info.csv")
relative error in removal at WWTP
Function returns list with loads and standard deviations, by entry path (sep, cso, wwtp) and by surface water catchment. Concentration in units "mg/L" and "ug/L" is automatically transformed to loads in "kg/yr". Other (unknown) units are left unchanged, resulting in "unit * m3/yr".