Index Percentage Satisfaction

Very satisfied v₁

More satisfied v₂

General v₃

Not so satisfied v₄

Not satisfied v₅

Safety

40

30

21

5

4

Convenience

24

17

27

21

11

Quasi-point

17

30

31

14

8

Rapidity

4

12

32

42

10

Comfort

5

25

48

17

5

Economic

9

31

39

17

4