Year

Method of TL-moments

Method of L-moments

Maximum likelihood method

μ

σ2

θ

μ

σ2

θ

μ

σ2

θ

2004

10.961

0.552

39,899

11.028

0.675

33,738

11.503

0.665

7.675

2005

11.006

0.521

40,956

11.040

0.677

36,606

11.542

0.446

−8.826

2006

11.074

0.508

44,941

11.112

0.440

40,327

11.623

0.435

−42.331

2007

11.156

0.472

48,529

11.163

0.654

45,634

11.703

0.421

−171.292

Year

Criterion χ2

Criterion χ2

Criterion χ2

2004

494.441

866.279

524.478

2005

731.225

899.245

995.855

2006

831.667

959.902

1067.789

2007

1050.105

1220.478

1199.035