Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
F	39.737504	0.0	473.956275	39.550004	39.925004	0.375	20250415_184035UTC_V00OS11.WAV
B	32.5312496	0.0	189.5812750000001	32.449999600000005	32.6124996	0.1624999999999943	20250415_184035UTC_V00OS11.WAV
V	13.118752	1191.6667749999997	1611.458225	12.850002	13.387502	0.5375000000000014	20250415_184035UTC_V00OS11.WAV
B	51.062496	3060.4145	3222.9145	50.962496	51.162496	0.2000000000000028	20250415_184035UTC_V00OS11.WAV