Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	38.156248	704.1645000000002	826.0395000000002	37.512496	38.8	1.2875039999999984	20250223_150250UTC_V00OS11.WAV
O	28.712504	284.3727250000002	433.3312750000002	27.812504	29.612504	1.7999999999999972	20250223_150250UTC_V00OS11.WAV