Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	49.943752	121.87174999999996	961.45725	49.800002000000006	50.087502	0.2874999999999943	20250202_093850UTC_V00OS11.WAV
C	39.268752	189.5855	961.4605	39.125002	39.412502	0.2874999999999943	20250202_093850UTC_V00OS11.WAV