Table 2. Comparison of mean values (± SEs, n = 20 subjects) of parameters for the level and the ascending phase of the flight song.

Parameters		Phase of flight song		F	p
		Ascending	Level
Frequency (Hz)	peak frequency	4074 ± 25.7	3954 ± 30.2	14.79	p<0.0003
	bandwidth	1755 ± 30.5	1859 ± 36.6	5.26	p<0.025
	quartile 25%	3636 ± 20.5	3506 ± 25.6	18.81	p<0.0001
	quartile 50%	4128 ± 18.6	3986 ± 26.7	23.04	p<0.0001
	quartile 75%	4674 ± 17.9	4495 ± 27.6	31.94	p<0.0001
Temporal	duration (ms)	137.9 ± 2.2	158.9 ± 3	42.22	p<0.0001
	interval (ms)	186.1 ± 2.5	212.5 ± 3	57.94	p<0.0001
	gap (ms)	48.33 ± 0.7	54 ± 2	18.33	p<0.0001
	rhythm	2.85 ± 0.05	2.976 ± 0.07	2.79	0.0999
	tempo	5.404 ± 0.071	4.743 ± 0.08	62.58	p<0.0001
Versatility	SylVer	8.309 ± 0.13	6.778 ± 0.2	59.40	p<0.0001
	TrVer	8.005 ± 0.12	7.152 ± 0.1	30.56	p<0.0001
	TotVer	68.91 ± 1.7	52.03 ± 2.11	56.92	p<0.0001

Significant p-values are given in bold.