Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
M	52.112504	54.166775000000285	189.58322500000028	51.675004	52.550004	0.875	20250409_220435UTC_V00OS11.WAV
O	52.137496	54.16449999999965	176.03949999999963	51.712496	52.562496	0.8499999999999943	20250409_220435UTC_V00OS11.WAV
P	48.7062504	94.79372500000004	243.75227500000005	48.0749984	49.337502400000005	1.262504000000007	20250409_220435UTC_V00OS11.WAV
P	45.118752	108.33127500000008	284.37272500000006	44.3625	45.875004	1.512504000000007	20250409_220435UTC_V00OS11.WAV