Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
O	30.662496	230.2105000000004	352.0855000000004	30.037496	31.287496	1.25	20250416_044635UTC_V00OS11.WAV
P	30.65	216.6687250000004	365.6272750000004	30.0125	31.2875	1.2749999999999986	20250416_044635UTC_V00OS11.WAV
H	30.668752	243.75	365.625	30.062504	31.275	1.2124960000000016	20250416_044635UTC_V00OS11.WAV
U	30.643752	230.2062750000001	365.62272500000006	30.0	31.287504	1.2875039999999984	20250416_044635UTC_V00OS11.WAV