α1

0.229#

0.149#

0.170#

0.071#

0.139*

0.126#

(0.031)

(0.020)

(0.020)

(0.012)

(0.060)

(0.030)

β1

0.662#

0.793#

0.799#

0.906#

0.857#

0.840#

(0.034)

(0.022)

(0.018)

(0.015)

(0.057)

(0.038)

LL

−2154.805

−2321.329

−2238.407

−2656.915

−1954.319

−2210.929

SIC

5.108

5.500

5.305

6.291

4.636

5.240

Q(20)

39.945#

27.280

26.354

39.775#

29.745

18.550

Qs(20)

13.500

16.550

11.537

12.339

10.114

12.557

ARCH-LM

0.446

1.137

0.531

0.858

0.450

0.822