Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	52.175	121.87727499999993	297.9187249999999	51.4	52.95	1.5499999999999972	20250419_122835UTC_V00OS11.WAV
H	52.175	121.87727499999993	297.9187249999999	51.4	52.95	1.5499999999999972	20250419_122835UTC_V00OS11.WAV
U	31.381248	826.0395000000001	988.5395	30.7625	31.999996	1.2374960000000002	20250419_122835UTC_V00OS11.WAV