Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	38.668752	81.24772500000012	717.706275	38.075	39.262504	1.187504000000004	20250312_112617UTC_V00OS11.WAV
E	55.837504	501.0437249999999	731.2522749999999	55.700004	55.975004000000006	0.2750000000000057	20250312_112617UTC_V00OS11.WAV
U	47.45	609.3750000000001	731.2500000000001	46.900000000000006	48.0	1.0999999999999943	20250312_112617UTC_V00OS11.WAV