Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	53.443752	473.9582249999999	622.9167749999999	52.837504	54.05	1.2124960000000016	20250410_084635UTC_V00OS11.WAV
T	53.45	473.9582249999999	622.9167749999999	52.8625	54.0375	1.1749999999999972	20250410_084635UTC_V00OS11.WAV