Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	15.212504	311.45822499999974	460.4167749999997	14.850003999999998	15.575004	0.7250000000000014	20250421_085835UTC_V00OS11.WAV
L	20.212504	108.33550000000008	433.3355000000001	19.812504	20.612504	0.7999999999999972	20250421_085835UTC_V00OS11.WAV