| Parameters | Class | Assigned rank (R) | Normalized rank (NR) |
| Altitudes | 0 - 100 m | 6 | 0.4 |
| 100 - 200 m | 5 | 0.333333 | |
| 200 - 1000 m | 3 | 0.2 | |
| 1000 - 2000 m | 2 | 0.133333 | |
| >2000 m | 1 | 0.066667 |