Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	50.531248	176.03949999999998	907.2895	50.249998	50.812498	0.5625	20250411_101635UTC_V00OS11.WAV
D	53.118752	40.62825000000032	947.9177500000004	52.925002	53.312502	0.3875000000000028	20250411_101635UTC_V00OS11.WAV