Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
D	52.237504	257.29275000000035	934.3782500000004	52.050004	52.425004	0.375	20250411_023435UTC_V00OS11.WAV
D	54.743752	216.66775	1002.08225	54.550002	54.937502	0.3875000000000028	20250411_023435UTC_V00OS11.WAV