| N | z |
| 1 | 0.7419 |
| 21 | 0.5960 |
| 41 | 0.6693 |
| 61 | 0.5955 |
| 81 | 0.6238 |
| 101 | 0.6139 |
| 121 | 0.6281 |
| 141 | 0.6181 |
| 161 | 0.6193 |
| 181 | 0.6282 |
| 201 | 0.6108 |
| 221 | 0.6300 |
| 241 | 0.6126 |
| 261 | 0.6262 |
| 281 | 0.6259 |