Table 1 Linear trend models and unit level trend components τij (i, j = 0.5, 1.5, …, 239.5; cf. (1))
| Trend | τij | min(τij) | mean(τij) | max(τij) |
|---|---|---|---|---|
| Strong | (i + j − 241)/120 | –2 | 0 | 2 |
| Moderate | (i + j − 241)/240 | –1 | 0 | 1 |
| Weak | (i + j − 241)/480 | −0.5 | 0 | 0.5 |
| Trend | τij | min(τij) | mean(τij) | max(τij) |
|---|---|---|---|---|
| Strong | (i + j − 241)/120 | –2 | 0 | 2 |
| Moderate | (i + j − 241)/240 | –1 | 0 | 1 |
| Weak | (i + j − 241)/480 | −0.5 | 0 | 0.5 |