Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
T	38.656248	406.25227500000005	541.6687250000001	37.712496	39.6	1.887504000000007	20250411_051035UTC_V00OS11.WAV
U	54.687504	826.0394999999996	1029.1644999999996	54.137504	55.237504	1.0999999999999943	20250411_051035UTC_V00OS11.WAV