Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	47.193752	650.0	771.875	46.462504	47.925	1.4624960000000016	20250411_005235UTC_V00OS11.WAV
O	49.031248	270.83127499999966	365.6227249999996	48.462496	49.6	1.137504000000007	20250411_005235UTC_V00OS11.WAV
T	55.493752	487.4977249999997	677.0812749999998	55.0375	55.950004	0.9125039999999984	20250411_005235UTC_V00OS11.WAV