Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	49.812496	501.0395000000001	704.1645000000001	49.487496	50.137496000000006	0.6500000000000057	20250413_232835UTC_V00OS11.WAV
B	41.443752	0.0	189.5812750000001	41.362502000000006	41.525002	0.1624999999999943	20250413_232835UTC_V00OS11.WAV