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Normalized Euclidean-norm error ε2 [given by Eq. (22)] over the xz plane for the approximation in Eq. (8).
| f 0 | Cubature rules | |||||
|---|---|---|---|---|---|---|
| Equally-spaced sx, sy (EQ) | 20×8 Gauss-Legendre (GL) | 127-point cubature (CC) | ||||
| (0,0) mode | (1,0) mode | (0,0) mode | (1,0) mode | (0,0) mode | (1,0) mode | |
| 0.4 | 0.96% | 1.07% | 3.72% | 0.92% | 1.62% | 3.70% |
| 0.5 | 1.58% | 2.83% | 3.01% | 1.16% | 1.89% | 4.02% |
| 0.6 | 3.38% | 5.78% | 2.68% | 1.86% | 2.88% | 5.30% |
