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The normalized Euclidean-norm error (Eq. (22)) for different grid spacings. The middle and right columns show the error with and without dispersion correction, respectively.
| Grid spacing | Dispersion correction | No dispersion correction |
|---|---|---|
| λ/40 | 0.96% | 1.93% |
| λ/30 | 1.68% | 3.43% |
| λ/20 | 3.77% | 7.75% |
| λ/10 | 15.2% | 31.2% |
