Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	51.725	121.87174999999962	920.8322499999996	51.5	51.95	0.4500000000000028	20250220_035650UTC_V00OS11.WAV
V	33.868752	392.7062750000002	731.2477250000002	33.637502	34.100002	0.4625000000000057	20250220_035650UTC_V00OS11.WAV
E	33.862496	311.4582250000004	744.7917750000004	33.587496	34.137496	0.5499999999999972	20250220_035650UTC_V00OS11.WAV