| Rank | Unit of measurement or family representative or average adjusted weighted level curve | Average weighted level curve | |||
1 | 2 | 3 | 4 | |||
The Netherlands | The UK | Belgium | France | |||
Weighted level curve | Y = 3.19/X0.05 | Y = 3.24/X0.13 | Y = 3.27/X0.18 | Y = 3.32/X0.22 | Y = 1/X0.14 | Y = 4.85/X0.14 |
Adjusted weighted level curve | Y = 1.24/X0.14 | Y = 1.01/X0.14 | Y = 0.88/X0.14 | Y = 0.80/X0.14 | ||
Level number | 1.24 | 1.01 | 0.88 | 0.80 | Level 1 |