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Comparison of quartiles of the predicted nitrate concentration by quartiles of the measured nitrate concentrations, 77 wells used for the model validation
| Quartiles of the predicted nitrate concenytration | |||||
|---|---|---|---|---|---|
| Quartiles of measured nitrate concentration | Q1 | Q2 | Q3 | Q4 | Total |
| Q1 | 13 | 1 | 3 | 0 | 17 |
| Q2 | 3 | 11 | 6 | 0 | 20 |
| Q3 | 1 | 6 | 6 | 6 | 19 |
| Q4 | 1 | 2 | 5 | 13 | 21 |
| total | 18 | 20 | 20 | 19 | 77 |
Percent agreement = 56%
