Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
T	48.7	473.9582250000003	582.2917750000004	48.150000000000006	49.25	1.0999999999999943	20250304_135017UTC_V00OS11.WAV
B	38.543752	0.0	162.49999999999972	38.450002	38.637502	0.1875	20250304_135017UTC_V00OS11.WAV