Impact of Urban Undersea Tunnel Longitudinal Slope on the Visual Characteristics of Drivers

Table 5

Tests of within-subject effects (one-way repeated measures ANOVA).

Index	Direction	Sphericity assumed		Greenhouse–Geisser epilon
		F	Prob > F	F	Prob > F
Average fixation time	Uphill	15.693	1.918E − 20	15.693	9.688E − 9
	Downhill	22.023	1.208E − 27	22.023	1.219E − 12
Visual lobe	Uphill	21.441	5.133E − 27	21.441	9.732E  − 20
	Downhill	3.983	8.817E − 5	3.983	6.580E  − 4