τ

e ( H )

order

e ( u )

order

time

1/40

2.09 × 102

2.47 × 102

481 s

1/80

5.47 × 103

1.93

6.56 × 103

1.91

915 s

1/160

1.40 × 103

1.97

1.69 × 103

1.96

1794 s