Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	50.162496	27.083224999999857	257.29177499999986	49.999996	50.324996	0.3250000000000028	20250412_030435UTC_V00OS11.WAV
O	53.506248	27.08127499999993	243.74772499999995	53.262498	53.749998	0.4874999999999971	20250412_030435UTC_V00OS11.WAV
O	46.962504	13.541775000000271	230.2082250000003	46.712504	47.212504	0.5	20250412_030435UTC_V00OS11.WAV
O	43.506248	27.08127499999993	243.74772499999995	43.274998	43.737498	0.4625000000000057	20250412_030435UTC_V00OS11.WAV