Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	50.081248	257.2937249999999	365.627275	49.562496	50.6	1.0375039999999984	20250412_051035UTC_V00OS11.WAV
P	50.068752	270.8332250000003	379.16677500000026	49.525004	50.6125	1.0874960000000016	20250412_051035UTC_V00OS11.WAV