Data

GMP

HE

IDA

NI

NU

OGE

PCG

PEG

PGN

PNM

PNW

POM

α

0.01708

(0.63)

0.02526

(1.38)

0.01703

(0.77)

0.04233

(1.86)

0.02871

(1.1)

0.05375

(2.35)*

0.02504

(0.78)

0.02812

(1.24)

0.01937

(0.92)

0.01434

(0.48)

0.04156

(1.54)

0.01162

(0.49)

β

0

(0)

0.25115

(17.8)**

0.28275

(17.02)**

0.2745

(16.28)**

0.26276

(13.39)**

0.26909

(15.83)**

0.45387

(23.01)**

0.39926

(22.84)**

0.40404

(24.81)**

0.36322

(15.33)**

0.28999

(14.04)**

0.33895

(18.49)**

$\hat{σ}$

1.51031

(37.36)**

1.03229

(31.91)**

1.28364

(24.93)**

1.27692

(36.04)**

1.48315

(29.76)**

1.29844

(32.69)**

3.70063

(33.23)**

1.27678

(33.74)**

1.19715

(40.24)**

1.70006

(40.4)**

1.54067

(35.22)**

1.32433

(34.1)**

K

0.89041

(12.15)**

1.7801

(10.69)**

1.89576

(11.65)**

1.61926

(12.38)**

1.7651

(11.54)**

1.64702

(12.09)**

2.59563

(14.12)**

1.72383

(10.76)**

1.86959

(16.81)**

2.20637

(11.67)**

1.91113

(12.84)**

1.72963

(10.93)**

λ

0.00893

(0.53)

0.01915

(0.81)

0.00958

(0.4)

0.03129

(1.37)

0.03459

(1.47)

0.04544

(1.98)*

0.02206

(0.85)

−0.01319

(−0.57)

0.03266

(1.31)

0.06899

(2.62)**

0.02404

(0.98)

0.02423

(1.03)

n

8.47444

(3.16)**

4.29366

(5.9)**

3.40655

(9.16)**

4.45892

(6.83)**

3.9108

(7.18)**

4.14196

(7.16)**

n/a

4.5781

(5.38)**

3.82797

(20.82)**

4.09302

(9.09)**

3.80983

(10.07)**

4.43101

(5.87)**

SK

0.07244

0.1281

0.14737

0.21603

0.29957

0.36192

n/a

−0.08038

0.28550

0.41152

0.20891

0.15657

KU

15.25315

28.4597

n/a

23.03044

n/a

65.12891

n/a

16.91787

n/a

60.11703

n/a

21.4893

LogL

−4800.23

−4120.4

−4617.66

−4727.17

−5144.01

−4738.13

−5421.32

−4782.28

−4512.1

−5696.39

−5286.74

−4876.01

LR-N.

1763.69**

468.92**

938.52**

710.16**

665.23**

766.09**

2532.76**

449.98**

18181.1**

519.5**

1046.42**

503.67**

R2

0

0.05861

0.04686

0.04484

0.03197

0.04206

0.04261

0.09575

0.00037

0.04413

0.03124

0.06583

OBS

3026

3026

3026

3026

3026

3026

3026

3026

3026

3026

3026

3026

Data

PPL

PSD

SCG

SO

SRP

TE

TXU

UIL

UTL

WEC

WPS

WR

α

0.03794

(1.51)

0.0281

(1.32)

0.03463

(1.75)

0.05432

(2.3)*

0.01638

(0.58)

0.03161

(1.48)

0.04145

(1.83)

0.03472

(1.81)

0.03334

(1.07)

0.02829

(1.36)

0.03052

(1.69)

0.00937

(0.39)

β

0.32879

(18.5)**

0.26917

(16.52)**

0.27145

(19.03)**

0.38496

(20.61)**

0.27807

(15.09)**

0.26518

(16.21)**

0.3327

(18.89)**

0.25387

(16.27)**

0

(0)

0.29023

(17.65)**

0.27091

(18.88)**

0.25373

(14.76)**

$\hat{σ}$

1.44237

(25.6)**

1.1919

(36.73)**

1.10238

(33.34)**

1.34322

(41.04)**

1.90986

(8.62)**

1.17319

(43.16)**

1.28233

(27.04)**

1.06128

(49.29)**

1.50574

(32.71)**

1.15014

(38.41)**

0.99239

(52.91)**

1.4101

(22.38)**

K

1.57153

(11.37)**

1.68135

(11.47)**

1.40588

(10.74)**

2.0868

(13.57)**

1.96469

(11.25)**

1.39883

(10.76)**

2.03412

(10.23)**

1.67291

(13.42)**

0.99411

(12.11)**

1.88553

(10.62)**

1.55622

(12.9)**

1.65203

(11.1)**

λ

0.04057

(1.83)

−0.00542

(−0.23)

0.02084

(0.98)

0.04126

(1.6)

0.01396

(0.58)

0.02309

(1.07)

0.02145

(0.85)

−0.00447

(−0.19)

0.01642

(0.73)

0.05015

(2.02)*

0.04414

(1.93)

0.00421

(0.19)

n

3.95257

(6.2)**

4.67901

(5.89)**

5.41577

(3.91)**

3.97617

(12.14)**

2.51462

(11.78)**

7.98421

(2.66)**

3.81108

(6.78)**

6.2272

(6.02)**

12.34229

(1.58)

4.88652

(5.3)**

8.61146

(3.75)**

3.61687

(6.81)**

SK

0.38868

−0.03273

0.12786

0.28395

n/a

0.10206

0.17479

−0.01885

0.09581

0.24506

0.1615

0.05299

KU

n/a

15.52784

12.43875

n/a

n/a

6.98832

n/a

7.13074

9.1353

10.72751

5.71448

n/a

LogL

−4984.19

−4571.21

−4283.62

−4946.5

−5125.39

−4589.18

−4764.81

−4324.27

−4143.2

−4539.15

−4148.69

−4871.91

LR-N.

747.67**

510.65**

562.61**

1770.18**

1909.21**

356.45**

435.13**

411.35**

560.08**

309.54**

261.32**

782.88**

R2

0.05309

0.05044

0.06017

0.05387

0.02391

0.05059

0.06869

0.05425

0

0.06336

0.07138

0.0341

OBS

3026

3026

3026

3026

3026

3026

3026

3026

2467

3026

3025

3026