Variable

Yangtze river delta

Shanghai

Jiangsu

Zhejiang

Anhui

Ln PGDP

0.0631**

(0.43)

0.0357**

(0.32)

0.0320***

(0.31)

0.0401**

(4.23)

0.0780*

(3.12)

Ln TMT

0.1035**

(1.19)

0.0689***

(1.24)

0.0125**

(1.09)

0.0471***

(0.90)

0.1301**

(2.06)

Ln IE

0.0072*

(3.12)

0.0412***

(1.81)

0.0067***

(3.69)

0.0013**

(2.47)

0.1011*

(3.15)

R²

0.3649

0.4782

0.4192

0.6024

0.5921

F-Measure

17.8923

19.9891

13.9663

19.7632

14.3860