Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	50.687504	324.9977249999997	839.5812749999998	50.437504	50.937504	0.5	20250418_180435UTC_V00OS11.WAV
D	50.687504	311.45627500000023	812.4977250000002	50.425004	50.950004	0.5250000000000057	20250418_180435UTC_V00OS11.WAV