Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
B	49.331248	0.0	162.49999999999972	49.237498	49.424998	0.1875	20250413_213435UTC_V00OS11.WAV
E	31.712504	67.70724999999999	947.91775	31.487504	31.937504	0.4500000000000028	20250413_213435UTC_V00OS11.WAV