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

Table 6

Mauchly’s test of sphericity and evaluation of epsilon (two-way repeated measures ANOVA).

Index	Direction	Prob > ChiSq	Greenhouse–Geisser epsilon	Huynh–Feldt epsilon	Lower-bound epsilon
Average fixation time	Up-and-down slope (direction)	≤0.001	1.000	1.000	1.000
	Longitudinal slope (percent)	3.976E − 13	0.379	0.436	0.111
	Interaction	≤0.001	0.262	0.287	0.111
Visual lobe	Up-and-down slope (direction)	≤0.001	1.000	1.000	1.000
	Longitudinal slope (percent)	0.079	0.705	0.923	0.111
	Interaction	0.034	0.688	0.896	0.111