Variable

regression coefficient

S.D.

T

P

lnZ1

0.0802

0.0357

2.24

0.026**

lnZ2

−0.2495

0.0697

−3.58

0.000***

lnZ3

0.0430

0.0439

0.98

0.329

lnZ4

0.0170

0.0201

0.84

0.401

lnZ5

−0.0392

0.0180

−2.18

0.030**