Table 3 The first-four central moments under different parameters

r (t_int=75,p=1)

1%

2%

3%

4%

5%

u₁ (10⁶ USD)

16.5814

12.2099

9.3735

7.4671

6.1389

u₂ (10⁶ USD)

5.5974

4.3773

3.6461

3.1713

2.8393

u₃

0.53

0.61

0.71

0.81

0.90

u₄

3.39

3.54

3.75

3.98

4.23

t_int (r=2%,p=1)

50

75

100

125

150

u₁ (10⁶ USD)

9.9349

12.2099

13.5897

14.4266

14.9343

u₂ (10⁶ USD)

4.1756

4.3773

4.4492

4.4753

4.4849

u₃

0.68

0.61

0.59

0.58

0.57

u₄

3.64

3.54

3.51

3.50

3.49

p (r=2%,t_int=75)

0.5

1.0

1.5

2.0

2.5

u₁ (10⁶ USD)

6.1049

12.2099

18.3148

24.4197

30.5247

u₂ (10⁶ USD)

2.1886

4.3773

6.5659

8.7546

10.9432

u₃

0.61

0.61

0.61

0.61

0.61

u₄

3.54

3.54

3.54

3.54

3.54