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Table 3

Estimated regression coefficients and p-values of removal efficiency of 4-NP

TermCoefficientSE coefficientp-value
Constant −109.91 52.00 0.027 
NP 0.23 0.43 0.015 
MMNC 34.84 10.92 0.015 
pH 47.17 14.37 0.013 
NP*NP −0.0067 0.0024 0.040 
MMNC*MMNC −4.25 1.46 0.029 
pH*pH −4.27 1.16 0.008 
NP*MMNC −0.063 0.039 0.015 
NP*pH 0.069 0.044 0.016 
MMNC*pH 0.091 1.59 0.956 
TermCoefficientSE coefficientp-value
Constant −109.91 52.00 0.027 
NP 0.23 0.43 0.015 
MMNC 34.84 10.92 0.015 
pH 47.17 14.37 0.013 
NP*NP −0.0067 0.0024 0.040 
MMNC*MMNC −4.25 1.46 0.029 
pH*pH −4.27 1.16 0.008 
NP*MMNC −0.063 0.039 0.015 
NP*pH 0.069 0.044 0.016 
MMNC*pH 0.091 1.59 0.956 

SE: standard error.

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