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

Table 7

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

Index	Direction	Sphericity assumed		Greenhouse–Geisser epilon		Huynh–Feldt
		F	Prob > F	F	Prob > F	F	Prob > F
Average fixation time	Up-and-down slope (direction)	85.213	3.925E − 10	85.213	3.925E − 10	85.213	3.925E − 10
	Longitudinal slope (percent)	18.728	5.298E − 24	18.728	1.796E − 10	18.728	1.019E − 11
	Interaction	34.322	1.529E − 39	34.322	4.636E − 12	34.322	5.484E − 13
Visual lobe	Up-and-down slope (direction)	646.495	2.245E − 21	646.495	2.245E − 21	646.495	2.245E − 21
	Longitudinal slope (percent)	18.754	4.943E − 24	18.754	1.321E − 17	18.754	2.300E − 22
	Interaction	5.611	4.324E − 7	5.611	1.843E − 5	5.611	1.620E − 4