Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	46.981248	270.8312750000001	528.1227250000001	46.524996	47.4375	0.9125039999999984	20250410_012235UTC_V00OS11.WAV
U	42.731248	920.8312749999998	1056.2477249999995	42.1875	43.274996	1.0874960000000016	20250410_012235UTC_V00OS11.WAV
B	35.031248	0.0022750000003526	176.04372500000034	34.949998	35.112497999999995	0.1624999999999943	20250410_012235UTC_V00OS11.WAV
D	36.556248	148.9572500000001	988.54275	36.349998	36.762498	0.4124999999999943	20250410_012235UTC_V00OS11.WAV