Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	30.681248	108.33225000000031	947.9177500000004	30.562498	30.799998	0.2374999999999971	20250205_200250UTC_V00OS11.WAV
C	30.693752	108.33225	907.29275	30.575002	30.812502	0.2374999999999971	20250205_200250UTC_V00OS11.WAV