| CLAYr | The Digital Soil Map of Sweden -topsoil clay content |
| CLAYs | SLU farm (Brogarden) soil sample data -topsoil clay content |
| E | Nash-Sutcliffe Modelling Efficiency (E) |
| mae | Mean Absolute Error (MAE) |
| me | Mean Error (ME) |
| mri | mri |
| r2 | Coefficient of Determination (r2) |
| rmse | Root Mean Square Error (RMSE) |