Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
C	51.525	270.8322500000001	1069.79275	51.3625	51.6875	0.3250000000000028	20250131_171450UTC_V00OS11.WAV
C	52.675	230.20724999999965	1015.6217499999996	52.5375	52.8125	0.2750000000000057	20250131_171450UTC_V00OS11.WAV
D	51.531248	270.8322500000002	1056.2467500000002	51.374998	51.687498	0.3125	20250131_171450UTC_V00OS11.WAV