N

Op-Six

MCG-Six

CR-Six

Error

Order

Error

Order

Error

Order

32

2.824e−8

-

6.237e−8

-

1.861e−8

-

64

4.296e−10

6.04

9.881e−10

5.98

2.756e−10

6.08

128

6.785e−12

5.98

1.716e−11

5.85

5.016e−12

5.78

256

1.062e−13

6.00

2.429e−13

6.14

6.833e−14

6.20