Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	42.906248	216.6687249999999	406.252275	42.662498	43.149998	0.4874999999999971	20250421_005235UTC_V00OS11.WAV
O	3.556248	243.75000000000028	406.2500000000003	3.312498	3.799998	0.4874999999999998	20250421_005235UTC_V00OS11.WAV