Model/phase | RMSE (ppt) | MAE (ppt) | CC |
BPNN/training | 3.88 | 2.79 | 0.76 |
RBFNN/training | 3.76 | 2.72 | 0.77 |
Three-dimensional model/calibration | 4.49 | 3.80 | 0.79 |
BPNN/verification | 3.81 | 2.96 | 0.71 |
RBFNN/verification | 3.63 | 2.90 | 0.75 |
Three-dimensional model/verification | 5.09 | 4.25 | 0.75 |