Table 3 Information on supply allocation centers and disaster sites.

From: Optimization of a two-stage emergency logistics system considering public psychological risk perception under earthquake disaster

Number

x

y

Population affected/ person

Population density person/km2

Proportion of vulnerable population/%

0

−0.96

−32

/

/

/

1

−0.33

−19.87

11,269

279.42

46%

2

−1.36

−15.63

15,270

514.66

13%

3

−5.55

−14.95

10,086

339.94

9%

4

−0.91

−12.71

10,891

372.21

10%

5

0.9

−11.31

13,423

453.79

12%

6

1.96

−9.83

9464

436.73

8%

7

−0.62

−6.87

14,179

413.02

12%

8

10.76

−6.59

9419

186.88

8%

9

3.21

−3.29

11,120

220.85

9%

10

6.83

−1.66

8339

167.62

7%

11

0

0

9008

180.41

8%

12

19.16

1.14

10,792

15.78

42%

13

−2.64

2.5

8137

155.70

7%

14

−3.25

4.78

13,522

237.10

12%

15

17.35

6

4917

89.40

48%

16

5.85

10.84

17,115

126.31

40%

17

−1.9

11.03

27,532

533.15

24%

18

−2.93

16.64

3581

59.88

39%

19

5.34

21.03

10,749

17.20

41%

20

9.86

21.23

6358

90.06

41%

21

8.31

24

11,651

205.12

40%

22

−3.12

24.45

3475

17.92

37%