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Table 3

The prior distributions of key parameters and their value range

Symbol (unit)ParameterVariation rangePrior distribution
Cn1 (mg/L) NPS concentration of NH4+ 0.09–8.14 dnorm (2,1) 
Cn2 (mg/L) NPS concentration of COD 7.8–66.5 dnorm (25,0.04) 
Cn3 (mg/L) NPS concentration of TP 2.09–12.4 dnorm (4,1) 
Cn4 (mg/L) NPS concentration of TN 0.02–0.98 dnorm (0.2,1) 
k1 (d−1First-order attenuation coefficient of NH4+ 0.005–0.7 dnorm (0.09,100) 
k2 (d−1First-order attenuation coefficient of COD 0.009–0.9 dnorm (0.15,100) 
k3 (d−1First-order attenuation coefficient of TN 0.005–0.5 dnorm (0.10,100) 
k4 (d−1First-order attenuation coefficient of TP 0.01–0.6 dnorm (0.09,100) 
U.tau (s2/m2Reciprocal of velocity variance 400–10,000 dnorm (2500,0.01) 
Qn (m3/s) NPS discharge 10–30 dnorm (15,0.01) 
Symbol (unit)ParameterVariation rangePrior distribution
Cn1 (mg/L) NPS concentration of NH4+ 0.09–8.14 dnorm (2,1) 
Cn2 (mg/L) NPS concentration of COD 7.8–66.5 dnorm (25,0.04) 
Cn3 (mg/L) NPS concentration of TP 2.09–12.4 dnorm (4,1) 
Cn4 (mg/L) NPS concentration of TN 0.02–0.98 dnorm (0.2,1) 
k1 (d−1First-order attenuation coefficient of NH4+ 0.005–0.7 dnorm (0.09,100) 
k2 (d−1First-order attenuation coefficient of COD 0.009–0.9 dnorm (0.15,100) 
k3 (d−1First-order attenuation coefficient of TN 0.005–0.5 dnorm (0.10,100) 
k4 (d−1First-order attenuation coefficient of TP 0.01–0.6 dnorm (0.09,100) 
U.tau (s2/m2Reciprocal of velocity variance 400–10,000 dnorm (2500,0.01) 
Qn (m3/s) NPS discharge 10–30 dnorm (15,0.01) 

dnorm(α,β) denotes the norm distribution with the mean α and the reciprocal of variance β.

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