Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
V	49.475	785.4187249999998	934.3772749999998	49.375	49.575	0.2000000000000028	20250410_071635UTC_V00OS11.WAV
U	53.843752	907.293725	1056.252275	53.2625	54.425004	1.1625039999999984	20250410_071635UTC_V00OS11.WAV