Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	43.887504	663.5437250000002	812.5022750000003	43.225004	44.550004	1.3250000000000028	20250420_174035UTC_V00OS11.WAV
U	31.431248	717.7082249999996	866.6667749999997	30.974996	31.8875	0.9125039999999984	20250420_174035UTC_V00OS11.WAV
U	49.156248	636.458225	785.416775	48.637496	49.675	1.0375039999999984	20250420_174035UTC_V00OS11.WAV