TABLE 2

Minimum and maximum annual flow (m³ x 10⁶) and concentrations (mg/l) of aluminium, iron, manganese and zinc (input) used in a Monte Carlo analysis (10 000 iterations) to estimate annual metal loads (kg/year) originating from the Klipspruit and Steenkoolspruit rivers. Results are reported as average annual loads and the average, 10^th, 50^th and 90^th percentile ratios of Klipspruit to Steenkoolspruit loads (output).