| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| One shell sphere | One shell sphere | One shell sphere | ||
| Two shell sphere | Two shell sphere | Two shell sphere | ||
| Three shell sphere | Three shell sphere | Three shell sphere | ||
| Four shell sphere | Four shell sphere | Four shell sphere | ||
| Boundary element model | Boundary element model | Boundary element model (BEM) | ||
| Finite element model | Finite element model | Finite element model (FEM) |