Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
F	39.75	27.08549999999974	473.9604999999998	39.5625	39.9375	0.375	20250413_201035UTC_V00OS11.WAV
F	47.731248	6093.75	6500.0	47.499998	47.962498	0.4625000000000057	20250413_201035UTC_V00OS11.WAV