Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
B	42.531248	0.0	162.49999999999972	42.437498	42.624998	0.1875	20250312_135617UTC_V00OS11.WAV
B	43.037496	0.0	162.49999999999972	42.949996	43.124996	0.1749999999999971	20250312_135617UTC_V00OS11.WAV
B	38.943752	0.0	203.125	38.862502000000006	39.025002	0.1624999999999943	20250312_135617UTC_V00OS11.WAV
B	51.243752	0.0	162.49999999999972	51.162502	51.325002	0.1624999999999943	20250312_135617UTC_V00OS11.WAV