Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	32.725	270.83322499999986	419.7917749999998	32.300000000000004	33.15	0.8499999999999943	20250411_083435UTC_V00OS11.WAV
D	39.85	243.75325	1110.41775	39.75	39.95	0.2000000000000028	20250411_083435UTC_V00OS11.WAV
U	53.881248	839.5812749999997	1015.6227249999996	53.275	54.487496	1.2124960000000016	20250411_083435UTC_V00OS11.WAV
U	50.443752	582.2937249999998	731.2522749999998	49.662504000000006	51.225	1.562495999999996	20250411_083435UTC_V00OS11.WAV
U	46.275	812.4977250000001	1002.081275	45.625	46.925	1.2999999999999972	20250411_083435UTC_V00OS11.WAV