Variable

Coefficient

Std. Error

z-Statistic

Prob.

C

68.94718

9.476695

7.275446

0.0000

T

−0.511767

0.251077

−2.038288

0.0415

T*T

0.005564

0.001952

2.850765

0.0044

T*T*T

−1.70E-05

4.50E−06

−3.776543

0.0002

AR(1)

0.919672

0.027343

33.63413

0.0000

Variance Equation

C

1.643727

0.120276

13.66633

0.0000

RESID(-1)^2

0.296781

0.055337

5.363167

0.0000

R-squared

0.979556

Mean dependent var

52.51008

Adjusted R-squared

0.979225

S.D. dependent var

10.77524

S.E. of regression

1.553107

Akaike info criterion

3.615669

Sum squared resid

595.7987

Schwarz criterion

3.713709

Log likelihood

−448.5743

Hannan-Quinn criter.

3.655118

Durbin-Watson stat

2.041158

Inverted AR Roots

.92