Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	22.493752	568.7522750000003	1110.4187250000002	21.5375	23.450004	1.9125039999999984	20250421_174035UTC_V00OS11.WAV
U	1.212496	650.0	975.0	0.349996	2.074996	1.725	20250421_174035UTC_V00OS11.WAV
U	15.281248	582.2937249999998	934.3772749999998	14.562496	16.0	1.4375040000000006	20250421_174035UTC_V00OS11.WAV
D	33.275	13.539499999999634	826.0394999999996	33.0625	33.4875	0.4249999999999971	20250421_174035UTC_V00OS11.WAV
U	35.425	622.9144999999997	947.9144999999996	34.4	36.45	2.049999999999997	20250421_174035UTC_V00OS11.WAV
X	26.162496	3101.0427500000005	4509.378250000001	25.524996	26.799996	1.2749999999999986	20250421_174035UTC_V00OS11.WAV