Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	49.156248	501.0395000000001	704.1645000000001	48.812498	49.499998	0.6875	20250412_001035UTC_V00OS11.WAV
E	55.35	514.5854999999999	717.7104999999999	54.9875	55.7125	0.7249999999999943	20250412_001035UTC_V00OS11.WAV
E	52.025	528.1272749999999	704.1687249999999	51.6875	52.3625	0.6749999999999972	20250412_001035UTC_V00OS11.WAV
E	46.431248	528.1272749999999	704.1687249999999	46.062498	46.799998	0.7374999999999972	20250412_001035UTC_V00OS11.WAV