$\left(x,y\right)$

$\Vert U-U_{10}\Vert$

$\Vert U-U_{12}\Vert$

$\Vert V-V_{10}\Vert$

$\Vert V-V_{12}\Vert$

$\left(0.1,0.1\right)$

1.707 × 10⁻⁵

1.005 × 10⁻⁸

1.3250 × 10⁻⁶

8.006 × 10⁻⁹

$\left(0.1,0.5\right)$

1.956 × 10⁻⁵

6.006 × 10⁻⁸

1.596 × 10⁻⁶

7.508 × 10⁻⁹

$\left(0.1,0.9\right)$

2.236 × 10⁻⁵

5.803 × 10⁻⁸

4.773 × 10⁻⁶

6.009 × 10⁻⁹

$\left(0.5,0.1\right)$

1.873 × 10⁻⁵

4.600 × 10⁻⁸

5.385 × 10⁻⁶

7.036 × 10⁻⁹

$\left(0.5,0.5\right)$

1.887 × 10⁻⁵

3.008 × 10⁻⁸

7.858 × 10⁻⁶

5.005 × 10⁻⁹

$\left(0.5,0.9\right)$

2.092 × 10⁻⁵

2.519 × 10⁻⁸

6.619 × 10⁻⁶

4.001 × 10⁻⁹

$\left(0.9,0.1\right)$

1.973 × 10⁻⁵

2.363 × 10⁻⁸

5.363 × 10⁻⁶

2.206 × 10⁻⁹

$\left(0.9,0.5\right)$

2.907 × 10⁻⁵

5.009 × 10⁻⁸

6.009 × 10⁻⁶

3.005 × 10⁻⁹

$\left(0.9,0.9\right)$

2.306 × 10⁻⁵

6.000 × 10⁻⁸

5.000 × 10⁻⁶

2.500 × 10⁻⁹