Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
V	54.593752	947.9167749999998	1448.958225	54.487502	54.700002000000005	0.2125000000000056	20250411_012235UTC_V00OS11.WAV
D	50.162496	216.66774999999976	1096.8782499999998	49.987496	50.337496	0.3499999999999943	20250411_012235UTC_V00OS11.WAV