Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	51.3	257.2894999999999	419.7894999999999	51.0125	51.5875	0.5750000000000028	20250420_052835UTC_V00OS11.WAV
P	33.712496	257.2894999999999	419.7894999999999	32.624996	34.799996	2.174999999999997	20250420_052835UTC_V00OS11.WAV