Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	50.893752	284.37825000000026	988.5427500000004	50.750002	51.037502	0.2874999999999943	20250409_081635UTC_V00OS11.WAV
C	50.893752	297.9145	988.5395	50.762502	51.025002	0.2625000000000028	20250409_081635UTC_V00OS11.WAV
T	49.125	460.4167750000001	677.0832250000001	48.6125	49.6375	1.0250000000000057	20250409_081635UTC_V00OS11.WAV
E	49.131248	460.4167750000001	677.0832250000001	48.637496	49.625	0.9875040000000012	20250409_081635UTC_V00OS11.WAV