Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	32.825	1286.458225	1435.4167749999997	32.0375	33.612500000000004	1.5750000000000028	20250419_184635UTC_V00OS11.WAV
B	18.55	0.0022750000003526	176.04372500000034	18.4625	18.6375	0.1749999999999971	20250419_184635UTC_V00OS11.WAV
F	0.1	0.0	487.4999999999999	0.0125	0.1875	0.175	20250419_184635UTC_V00OS11.WAV
O	42.062496	257.28949999999963	379.1644999999996	41.412496	42.712496	1.2999999999999972	20250419_184635UTC_V00OS11.WAV