Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	47.768752	148.96050000000037	636.4605000000004	47.562502	47.975002	0.4124999999999943	20250131_131450UTC_V00OS11.WAV
U	46.868752	663.5437250000002	812.5022750000003	45.750004	47.9875	2.237495999999993	20250131_131450UTC_V00OS11.WAV
U	48.675	663.5417750000004	798.9582250000003	48.0	49.35	1.3499999999999943	20250131_131450UTC_V00OS11.WAV
B	28.431248	0.0022750000000684	135.41872500000005	28.299998	28.562498	0.2625000000000028	20250131_131450UTC_V00OS11.WAV
E	35.156248	27.08127499999995	649.997725	34.5375	35.774995999999994	1.237495999999993	20250131_131450UTC_V00OS11.WAV