N

r

$er{r}_N$

$p_N$

r

$er{r}_N$

$p_N$

10

1

0.0030

-

$\frac{1+\alpha }{2\alpha }$

0.0047

-

20

-

2.7992e−04

3.4219

-

6.8201e−04

2.8449

40

-

2.8175e−05

3.3125

-

6.3180e−05

3.4323

80

-

5.5760e−06

2.3371

-

5.2264e−06

3.5956