k

2

2.5

3

4

5

6

Gt

1.3293403

1.1018027

1.000000

0.9190626

0.8935153

0.8862269

Ge

1.3456242

1.1009763

0.9884201

0.9055425

0.8871348

0.8831800

Relative error (%)

1.2

0.075

1.1

1.47

0.7

0.3