| Variables | Y | X1 | LNX2 | LNX3 | X4 |
| Stationary | Unsteady | Unsteady | Unsteady | Unsteady | Unsteady |
| Variables | DY | DX1 | DLNX2 | DLNX3 | DX4 |
| Stationary | Steady | Steady | Steady | Steady | Steady |