| Scores range | Observed | Expected | ||
| Good | Bad | Good | Bad | |
| 971≤ | 426 | 8 | 424.94 | 9.06 |
| 957 - 970 | 423 | 13 | 419.99 | 16.01 |
| 944 - 956 | 409 | 21 | 408.45 | 21.55 |
| 929 - 943 | 403 | 30 | 405.47 | 27.53 |
| 913 - 928 | 397 | 37 | 399.69 | 34.31 |
| 893 - 912 | 392 | 41 | 391.02 | 41.98 |