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Table 2 Conspicuity indices for experiment 2

From: Which sign is more visible? Measuring the visibility of traffic signs through the conspicuity index method

 

A

B

C

D

N

13

13

13

13

Mean (mm)

97,8

169,4

156,8

134,2

SD (mm)

23,6

29,9

31,7

31,4

95% conf. level (mm)

13,3

16,3

17,2

17,1

Conspicuity angle (deg.)

17,8

31,9

29,3

24,8

95% conf. level (deg.)

2,4

2,9

3,1

3,1