Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
P	52.575	108.33550000000004	230.21050000000005	52.1625	52.9875	0.8250000000000028	20250412_004035UTC_V00OS11.WAV
O	54.075	284.37727500000005	460.4187250000001	53.525000000000006	54.625	1.0999999999999943	20250412_004035UTC_V00OS11.WAV
P'	54.062496	311.45822499999974	460.4167749999997	53.524996	54.599996	1.0750000000000028	20250412_004035UTC_V00OS11.WAV