OLP(a₄)

84.9838

66.5552***

46.6434**

10.2319*

0.7323

(t-value)

(0.7338)

(3.3738)

(2.5100)

(1.8442)

(0.0801)

(P-value)

(0.4731)

(0.0036)

(0.0249)

(0.0837)

(0.9371)

NGP(a₅)

2000.81***

7.8001

−447.59***

−34.041

−19.6245

(t-value)

(3.3775)

(0.0427)

(−4.3395)

(−1.0388)

(−0.4126)

(P-value)

(0.0036)

(0.9664)

(0.0006)

(0.3143)

(0.6853)

R²

0.9876

0.9864

0.9988

0.9879

0.7498

adj.R²

(0.9754)

(0.9730)

(0.9976)

(0.9761)

(0.5623)