Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	32.862504	3304.1645000000003	3426.0395000000003	32.262504	33.462504	1.2000000000000028	20250223_194450UTC_V00OS11.WAV
U	33.456248	3290.6272750000003	3466.668725	32.300000000000004	34.612496	2.312495999999996	20250223_194450UTC_V00OS11.WAV