| n | Orbital freq | COMSOL freq | %error |
| 1 |
|
| −4.98 |
| 2 |
|
| 0.05 |
| 3 |
|
| −2.48 |
| 4 |
|
| −1.59 |
| 5 |
|
| −5.36 |
| 6 |
|
| 14.28 |
| 7 |
|
| 11.16 |