Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
E	20.218752	135.41775000000007	812.5032500000001	20.000002	20.437502	0.4375	20250207_153850UTC_V00OS11.WAV
D	38.781248	121.87499999999972	1056.2499999999995	38.612498	38.949998	0.3375000000000057	20250207_153850UTC_V00OS11.WAV
M	26.712504	27.083224999999715	135.41677499999972	26.350004	27.075004	0.7250000000000014	20250207_153850UTC_V00OS11.WAV