Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
P	49.968752	297.9145000000002	419.7895000000002	49.325	50.612504	1.2875039999999984	20250414_143435UTC_V00OS11.WAV
O	49.981248	297.9145000000002	419.7895000000002	49.337496	50.625	1.2875039999999984	20250414_143435UTC_V00OS11.WAV
P'	49.975	284.3772749999998	419.79372499999977	49.3625	50.5875	1.2249999999999943	20250414_143435UTC_V00OS11.WAV
A	37.512496	54.166775000000285	189.58322500000028	37.162496	37.862496	0.7000000000000028	20250414_143435UTC_V00OS11.WAV