Table 1 Average value of key variables

Guangzhou1

0.0056

1.49

0.84

0.61

78.51

7.11

1.90

6.4

7.26

Shenzhen2

0.0252

1.62

0.62

0.74

82.21

36.55

0.22

0.94

2.05

Zhuhai3

0.0150

1.56

0.80

0.61

81.96

20.96

0.17

0.61

1.65

Shaoguan5

−0.0010

1.20

0.90

0.34

75.20

2.03

0.93

2.9

18.38

Heyuan6

0.0025

1.28

0.83

0.18

60.72

0.61

0.97

2.9

15.48

Meizhou7

−0.0003

1.29

1.05

0.17

45.20

0.78

1.39

4.6

15.93

Huizhou8

0.0064

1.31

0.81

0.30

75.67

4.47

0.81

2.5

10.66

Shanwei9

0.0036

1.40

0.93

0.23

68.16

0.60

0.78

2.5

5.17

Dongguan10

0.0015

1.34

0.62

0.25

73.78

10.27

0.47

1.4

2.47

Zhongshan11

0.0025

1.44

0.70

0.28

76.07

6.48

0.37

1.2

1.80

Jiangmen12

0.0008

1.31

0.86

0.33

79.48

3.57

1.12

3.7

9.44

Foshan13

0.0048

1.41

0.94

0.41

72.93

8.48

0.95

3.1

3.87

Yangjiang14

−0.0008

1.36

1.05

0.24

68.51

0.68

0.71

2.4

7.81

Zhanjiang15

0.0017

1.14

0.83

0.22

76.11

1.24

1.91

6

12.49

Maoming16

0.0008

1.25

1.12

0.16

64.32

0.95

1.74

5.7

11.45

Qingyuan18

−0.0002

1.24

0.74

0.18

68.91

0.93

1.17

3.6

19.02

Mergedcity22

0.0004

1.37

0.88

0.23

72.36

1.88

3.44

11

10.28

Mergedcity23

0.0007

1.37

0.96

0.24

57.39

1.59

1.82

5.9

22.84