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Table 4

Comparison of different models with nitrate concentration

ModelClassNumber of water sample (based on the nitrate concentration)
RMSE
Very lowLowModerateHigh
DRASTIC Very low 23 0.853 
Low 16 11 
Moderate 14 
High 
DRASTIC-LU Very low 19 0.757 
Low 19 14 
Moderate 15 
High 13 
DRASTIC +SVM Very low 28 0.631 
Low 10 13 
Moderate 17 
High 15 
DRASTIC-LU + SVM Very low 32 0.502 
Low 13 
Moderate 19 
High 18 
ModelClassNumber of water sample (based on the nitrate concentration)
RMSE
Very lowLowModerateHigh
DRASTIC Very low 23 0.853 
Low 16 11 
Moderate 14 
High 
DRASTIC-LU Very low 19 0.757 
Low 19 14 
Moderate 15 
High 13 
DRASTIC +SVM Very low 28 0.631 
Low 10 13 
Moderate 17 
High 15 
DRASTIC-LU + SVM Very low 32 0.502 
Low 13 
Moderate 19 
High 18 
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