| n | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 |
| RMSE | 0.0041 | 0.0031 | 0.0023 | 0.0017 | 0.0012 | 0.0006 | 0.0003 | 6.9897 × 10−5 | 5.6801 × 10−6 |