Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	39.218752	0.0	893.7499999999999	39.050002	39.387502000000005	0.3375000000000057	20250306_145017UTC_V00OS11.WAV
C	30.15	40.62500000000017	690.6250000000002	29.8875	30.4125	0.5249999999999986	20250306_145017UTC_V00OS11.WAV
D	17.962496	67.71050000000008	677.0855000000001	17.787496	18.137496	0.3500000000000014	20250306_145017UTC_V00OS11.WAV