Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	47.425	162.4999999999999	934.375	47.15	47.7	0.5499999999999972	20250417_115235UTC_V00OS11.WAV
D	47.406248	135.41775000000035	920.8322500000004	47.149998	47.662498	0.5125000000000028	20250417_115235UTC_V00OS11.WAV
D	38.031248	189.58225000000036	866.6677500000003	37.799998	38.262498	0.4625000000000057	20250417_115235UTC_V00OS11.WAV
O	54.568752	67.70627499999995	203.12272499999995	54.1375	55.000004	0.8625040000000013	20250417_115235UTC_V00OS11.WAV