Table 2.

Normalized Mean Squared Error (NMSE) and percentage change of estimated E. coli loads due to perturbation of each factor (±20%) one-at-a-time and estimated E. coli loads while keeping other factors constant at their baseline values by the BNN model

Factors	Variation	Random Split-1	Random Split-2	Random Split-3	% change in E. coli  loads (range)
Temperature	Lower Upper	0.22 0.27	0.31 0.34	0.32 0.27	−5 to 5
DO	Lower Upper	0.43 0.35	0.45 0.37	0.56 0.32	−25 to 25
Phosphate	Lower Upper	0.18 0.21	0.10 0.23	0.21 0.22	−2 to 12
Ammonia	Lower Upper	0.15 0.14	0.21 0.11	0.22 0.12	−2 to 12
SS	Lower Upper	0.39 0.51	0.37 0.43	0.43 0.47	−20 to 20
Chlorophyll	Lower Upper	0.23 0.22	0.14 0.24	0.17 0.18	−2 to 5