On average the models were able to reproduce individual chlorine measurements with an absolute error in the
order of 0.02 mg/L, which is an average relative error of ca. 3%.
When comparing overall chlorine predicted concentrations with the measured ones at locations 1 and 2 by
online chlorine analyzers over a 48 h period, results in the models performance were quite similar (Table 4) as
RMSE remained equal to 0.02 mg/L (at location 2) and only slightly higher at location 1 (0.03 mg/L) for all tested