Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	20.425	5511.459199999999	6499.9987	20.175	20.675	0.5	20250217_142050UTC_V00OS11.WAV
B	30.987504	216.6667749999997	555.2082249999997	30.875004	31.100004	0.2250000000000014	20250217_142050UTC_V00OS11.WAV
U	25.593752	5416.664500000001	5579.164500000001	24.7125	26.475004	1.7625039999999998	20250217_142050UTC_V00OS11.WAV