Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
F	47.737504	27.081275000000204	487.4977250000002	47.575004	47.900004	0.3250000000000028	20250413_222835UTC_V00OS11.WAV
O	52.681248	270.8355000000001	473.9605000000001	52.287498	53.074998	0.7874999999999943	20250413_222835UTC_V00OS11.WAV