Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
F	54.087504	148.9582249999998	744.7917749999999	53.925004	54.250004	0.3250000000000028	20250418_202835UTC_V00OS11.WAV
V	29.956248	392.71050000000025	880.2105000000003	29.774998000000004	30.137498	0.3624999999999971	20250418_202835UTC_V00OS11.WAV
V	39.6	325.0	893.75	39.425	39.775	0.3499999999999943	20250418_202835UTC_V00OS11.WAV
D	20.2	284.37825000000026	988.5427500000004	19.9875	20.4125	0.4249999999999971	20250418_202835UTC_V00OS11.WAV