Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
C	52.868752	176.04177499999977	798.9582249999996	52.800002	52.937502	0.1375000000000028	20250420_024635UTC_V00OS11.WAV
T	51.506248	392.7062750000002	528.1227250000002	50.624996	52.3875	1.762504000000007	20250420_024635UTC_V00OS11.WAV