Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
T	52.9	352.0812749999999	528.122725	51.7875	54.0125	2.2249999999999943	20250411_094035UTC_V00OS11.WAV
U	49.256248	270.8354999999998	433.3354999999998	48.2375	50.274996	2.0374960000000044	20250411_094035UTC_V00OS11.WAV
O	49.268752	257.2894999999999	419.7894999999999	48.3	50.237504	1.937504000000004	20250411_094035UTC_V00OS11.WAV