| SAP% | Soil Type | R2 | RSE |
| 0 | Clay | 0.9768854 | 0.04780086 |
|
| Sandy Clay | 0.9684197 | 0.04629808 |
|
| Sandy Loam | 0.9702246 | 0.0247139 |
| 0.2 | Clay | 0.99594765 | 0.01590498 |
|
| Sandy Clay | 0.9967698 | 0.01246004 |
|
| Sandy Loam | 0.9753878 | 0.2379756 |
| 0.3 | Clay | 0.991913 | 0.02143425 |
|
| Sandy Clay | 0.9964436 | 0.01349697 |
|
| Sandy Loam | 0.995481 | 0.999741305 |
| 0.5 | Clay | 0.9943782 | 0.01541828 |
|
| Sandy Clay | 0.9944462 | 0.01587034 |
|
| Sandy Loam | 0.9965111 | 0.01094499 |