Table 3 Analysis of phonotaxis direction for a whine with two chucks at equal separation, but timed differently relative to the onset of the whine.

Stim.	Timing of chucks (ms) at spatial positions of 0° and 180°		n	Mean exit angle	Vector ( r)	Raleigh test ( P)	V-test at 0° ( P)	Comparison with Null Ho (P)
	0°	180°
a.	325	None	22	18°	0.846	<0.0001	<0.0001	Null Ho
b.	325	325	21	47°	0.293	0.165	0.1
c.	325	0	20	17°	0.511	<0.0001	<0.001	1.0
d.	325	50	20	32°	0.837	<0.0001	<0.0005	0.323
e.	325	405	23	33°	0.75	<0.0001	<0.0005	0.324
f.	325	485	21	35°	0.597	<0.0001	<0.001	0.467
g.	405	485	22	44°	0.786	<0.0001	<0.001	0.03
h.	485	None	25	68°	0.799	<0.0001	<0.025	<0.0001
i.	325	−80	22	130°	0.162	0.568	>0.1

Columns are the stimulus designation from Figure 5; the timing of the chucks relative to the onset of the whine at 0 ms (whine spatial position is 90°, chuck position is 0° or 180°); number of females (n); mean exit angle; vector strength (r) showing dispersion of the exit distribution; Raleigh test for random distribution; V-test showing probability that the exit distribution is different from the stimulus at 0°; Watson–Williams test for difference between the mean exit angle and that for single whine-chuck in natural sequence at 90° separation (Null Ho). Distributions without significant vectors (stims. b and i) are not used in the Watson–Williams test.

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