Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	54.587504	284.3749999999999	1015.625	54.375004	54.800004	0.4249999999999971	20250414_063435UTC_V00OS11.WAV
D	43.768752	243.7467499999997	920.8322499999996	43.537502	44.000002	0.4625000000000057	20250414_063435UTC_V00OS11.WAV
F	15.743752	40.62500000000014	487.5000000000002	15.575002	15.912502	0.3374999999999986	20250414_063435UTC_V00OS11.WAV