Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
V	50.368752	189.58225	1029.16775	50.175002	50.562502	0.3875000000000028	20250411_001035UTC_V00OS11.WAV
F	50.343752	230.2072500000001	1110.41775	50.150002	50.537502	0.3875000000000028	20250411_001035UTC_V00OS11.WAV
D	50.356248	216.66774999999984	1083.33225	50.162498	50.549998	0.3875000000000028	20250411_001035UTC_V00OS11.WAV