Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
C	49.012504	0.0	1570.8322499999997	48.800004	49.225004	0.4249999999999971	20250409_205835UTC_V00OS11.WAV
B	49.05	0.0022750000003526	176.04372500000034	48.9625	49.1375	0.1749999999999971	20250409_205835UTC_V00OS11.WAV