Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	50.318752	230.2105000000004	352.0855000000004	49.462504	51.175	1.7124960000000016	20250420_034035UTC_V00OS11.WAV
P	50.331248	257.2937249999999	365.627275	49.449996	51.212500000000006	1.762504000000007	20250420_034035UTC_V00OS11.WAV