Tab. 6 Parameters of benzene map
| Linear regression model + interpolation of residuals | Benzene annual average |
|
| background | traffic | |
| c (constant) | 2.1 | 1.5 |
| a1 (altitude) | -0.002 | |
| a2 (model SYMOS CO) | 0.04 | |
| range [km] | 28 | |
| nugget | 0 | |
| partial sill | 0.2 | |
| weight IDW | 2 | |
| RMSE [µg.m-3] | 0.3 | 0.3 |
| relat. RMSE [%] | 22 | 15 |