Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	39.387496	270.8332250000002	460.41677500000014	38.774996	39.999996	1.2249999999999943	20250417_115835UTC_V00OS11.WAV
T	39.418752	270.8355000000001	473.9605000000001	38.862504	39.975	1.112495999999993	20250417_115835UTC_V00OS11.WAV