N

$err\left(L^2\right)$

$err\left(H^1\right)$

$Err\left(L^2\right)$

$Err\left(H^1\right)$

104

8.90e−03

1.22e−01

1.50e−03

2.08e−02

300

2.10e−03

8.04e−02

2.09e−04

8.90e−03

1050

8.69e−04

4.09e−02

4.64e−05

2.20e−03

3509

4.33e−04

2.94e−02

1.25e−05

8.50e−04

17,000

5.60e−05

1.36e−02

7.44e−07

1.81e−04

51,494

2.84e−05

8.23e−03

2.17e−07

6.29e−05