Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	54.118752	609.377275	744.793725	53.450004	54.7875	1.3374960000000016	20250410_231035UTC_V00OS11.WAV
U	47.681248	636.4604999999999	798.9604999999999	47.362498	47.999998	0.6375000000000028	20250410_231035UTC_V00OS11.WAV