Variable

Dry season

Rainy season

R²

RMSE

a_NL

b_NL

a_NL

b_NL

coeff.

st. error

coeff.

st. error

coeff.

st. error

coeff.

st. error

T(°C)

23.20

1.40

13.40

2.00

24.40

1.30

9.70

1.90

0.885

2.81

log₁₀EC

2.18

0.05

0.88

0.07

1.82

0.04

0.93

0.07

0.979

0.004

log₁₀BOD₅

1.49

0.06

0.72

0.10

0.71

0.06

0.86

0.07

0.971

0.0083

log₁₀COD

1.68

0.07

0.80

0.11

1.01

0.07

0.85

0.11

0.847

0.01

log₁₀NH₃

−0.93

0.17

2.20

0.25

−0.82

0.17

1.38

0.25

0.915

0.057

log_{10 ${\text{NO}}_3^{-}$}

1.14

0.09

0.49

0.15

0.45

0.12

0.85

0.16

0.902

0.015

log_{10 ${\text{NO}}_2^{-}$}

−1.23

0.02

2.55

0.02

−2.13

0.17

1.71

0.21

0.980

0.027

log₁₀MBAS

−0.95

0.26

2.60

0.31

−1.23

0.24

2.29

0.30

0.950

0.079

log_{10 ${\text{SO}}_4^{2-}$}

1.66

0.10

0.71

0.15

1.12

0.10

0.70

0.15

0.902

0.21

log_{10 ${\text{PO}}_4^{3-}$}

−1.61

0.11

0.89

0.16

−2.10

0.12

1.58

0.17

0.937

0.0207

log₁₀FC

4.02

0.25

1.74

0.37

0.10

0.25

1.60

0.37

0.980

0.124

log₁₀TC

4.02

0.12

1.74

0.37

0.24

0.12

1.67

0.37

0.982

0.0987