Table 2.
The output of the linear mixed effects models for the Belgian and German eels with the estimated value for the intercept and covariates, the standard error (SE), degrees of freedom (DF), t-value and p-value.
| Eel group | Explanatory variables | Value | SE | DF | t-value | p-value |
|---|---|---|---|---|---|---|
| Belgian eels | Intercept | 42.87 | 23.95 | 1121 | 1.79 | 0.07 |
| Longitude | 0.72 | 0.20 | 1121 | 3.55 | < 0.01 | |
| Latitude | − 0.37 | 0.47 | 1121 | − 0.77 | 0.44 | |
| German eels | Intercept | 125.21 | 24.44 | 384 | 5.12 | < 0.01 |
| Longitude | 0.02 | 0.26 | 384 | 0.07 | 0.95 | |
| Latitude | − 2.06 | 0.42 | 384 | − 4.86 | < 0.01 |