Table 1. Mean vector properties of eating behavior rhythms.

	Day 7	Day 9	Day 35	Day 37	Day 42
Mean angle(μ) †	257 (234–274)	278 (206–333)	253(195–303)	263 (230–306)	248 (216–269)
Length (r)	0.58	0.28	0.26	0.56	0.44
P *	F = 330, p = 3x10-4	F = 22, p = .02	F = 39, p = .01	F = 60, p = .004	F = 174, p = 8x10-4

*Hotelling’s one sample test was used to test if there was a significant mean direction.

^†The 95% confidence intervals are reported (in parentheses) for the directions of the grand mean vectors.