Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
U	36.225	690.622725	798.956275	35.5875	36.8625	1.2750000000000057	20250420_205835UTC_V00OS11.WAV
U	30.45	690.6249999999999	812.4999999999999	29.8875	31.0125	1.125	20250420_205835UTC_V00OS11.WAV