Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	30.475	135.41449999999963	704.1644999999996	30.3	30.65	0.3500000000000014	20250419_200435UTC_V00OS11.WAV
O	53.731248	230.2062750000001	365.62272500000006	53.374998	54.087498	0.7125000000000057	20250419_200435UTC_V00OS11.WAV
O	50.543752	216.666775	392.708225	50.175002	50.912502	0.7374999999999972	20250419_200435UTC_V00OS11.WAV
D	44.856248	3331.24675	4495.83225	44.687498	45.024998	0.3375000000000057	20250419_200435UTC_V00OS11.WAV