| Decay model | Normality test | Constant-variance test | R2 | Mean Square Error (MSE) (%2/t2) |
| Hyperbolic decay with 3 parameters | Passed | Failed | 0.98 | 8.86 |
| Double exponential decay with 4 parameters | Failed | Failed | 0.99 | 6.90 |
| Single exponential decay with 3 parameters | Failed | Passed | na* | 770 |