Table 1. Parameters of the clicks recorded by QHB instrument (average value and standard deviation, N = 13,878).

Peak frequency	Frequency bandwidth ‘rms’	Duration ‘rms’
(135 ± 15) kHz	(19 ± 5) kHz	(57 ± 21) µs
Centroid frequency	Frequency bandwidth at -3 dB	Duration at -10 dB
(141 ± 10) kHz	(6 ± 3) kHz	(53 ± 26) µs
Inter-click interval (ICI)	Frequency bandwidth at -10 dB	Duration at -20 dB
(88  ± 117) ms	(16 ± 8) kHz	(106 ± 52) µs