Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	31.056248	636.4604999999999	798.9604999999999	30.112496	32.0	1.887504	20250209_162650UTC_V00OS11.WAV
U	15.368752	663.5394999999996	785.4144999999996	14.7375	16.000004	1.2625039999999998	20250209_162650UTC_V00OS11.WAV
U	46.143752	677.0855000000003	798.9605000000003	45.125004	47.1625	2.0374960000000044	20250209_162650UTC_V00OS11.WAV
U	7.5	677.0855000000003	798.9605000000003	7.0	8.0	1.0	20250209_162650UTC_V00OS11.WAV