Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
B	30.137496	0.0022750000003526	176.04372500000034	30.049996	30.224996	0.1749999999999971	20250415_124035UTC_V00OS11.WAV
U	45.725	636.4562750000001	771.8727250000001	45.1875	46.2625	1.0750000000000028	20250415_124035UTC_V00OS11.WAV