Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	15.487504	230.2082249999997	338.5417749999997	14.975004000000002	16.000004	1.0249999999999986	20250421_210435UTC_V00OS11.WAV
U	9.462496	947.918725	1096.8772749999998	8.649996	10.274996	1.625	20250421_210435UTC_V00OS11.WAV
A	32.25	4820.833225	5051.041775	32.025	32.475	0.4500000000000028	20250421_210435UTC_V00OS11.WAV