Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
T	48.475	379.1645000000002	541.6645000000002	48.0	48.95	0.9500000000000028	20250416_045835UTC_V00OS11.WAV
U	21.112504	1056.25	1178.125	20.350004	21.875004	1.5249999999999986	20250416_045835UTC_V00OS11.WAV