Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	55.725	162.49675000000008	1042.7072500000002	55.4875	55.9625	0.4749999999999943	20250410_044035UTC_V00OS11.WAV
D	52.256248	148.96050000000002	1002.0855	52.049998	52.462498	0.4124999999999943	20250410_044035UTC_V00OS11.WAV
D	50.581248	243.7500000000001	893.7500000000001	50.287498	50.874998000000005	0.5875000000000057	20250410_044035UTC_V00OS11.WAV
D	39.65	54.16774999999996	961.45725	39.4	39.9	0.5	20250410_044035UTC_V00OS11.WAV