E.Q.

HNSA

NGTC

KMMT

TOTAL

Model

$y=a{x}^b$

$y=a{x}^b$

$y=a{x}^2+bx$

$y=a{x}^2+bx$

$a$

0.0189

(8.471)

(0.0)

4.632

(5.799)

(0.0)

0.3139

(16.23)

(0.0)

0.2357

(24.03)

(0.0)

b

2.269

(34.27)

(0.0)

1.580

(32.72)

(0.0)

−61.52

(−5.389)

(0.0)

2.114

(0.2293)

(0.819)

R²

0.9719

0.9730

0.9505

0.9783