Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
W	52.081248	974.9967500000004	2180.2072500000004	51.824998	52.337498	0.5125000000000028	20250410_091635UTC_V00OS11.WAV
B	37.843752	0.0	189.5812750000001	37.762502000000005	37.925002	0.1624999999999943	20250410_091635UTC_V00OS11.WAV