Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	45.275	595.8312750000002	731.2477250000002	44.5375	46.0125	1.4749999999999943	20250410_234635UTC_V00OS11.WAV
U	40.818752	609.377275	744.793725	40.150004	41.4875	1.3374960000000016	20250410_234635UTC_V00OS11.WAV
U	49.881248	595.8312750000002	731.2477250000002	49.225	50.537496	1.312495999999996	20250410_234635UTC_V00OS11.WAV