Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	48.1812504	54.16677500000013	270.83322500000014	48.0250004	48.3375004	0.3125	20250412_040435UTC_V00OS11.WAV
U	54.475	893.7477250000002	1042.7062750000002	53.7375	55.2125	1.4749999999999943	20250412_040435UTC_V00OS11.WAV
T	55.456248	379.1667749999997	595.8332249999997	54.9125	55.999996	1.0874960000000016	20250412_040435UTC_V00OS11.WAV