Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	47.612504	257.2917749999998	433.3332249999999	47.237504	47.987504	0.75	20250409_213435UTC_V00OS11.WAV
U	48.6187496	1448.9562749999996	1624.9977249999995	48.1499976	49.0875016	0.937504000000004	20250409_213435UTC_V00OS11.WAV
T	55.4	352.0812749999999	528.122725	54.8	56.0	1.2000000000000028	20250409_213435UTC_V00OS11.WAV