Annotation	pos	Low Freq (Hz)	High Freq (Hz)	Begin Time (s)	End Time (s)	duration	filename
M	43.875	27.08550000000035	148.96050000000037	43.4125	44.3375	0.9249999999999972	20250420_130435UTC_V00OS11.WAV
O	43.881248	13.541774999999715	148.95822499999971	43.424996	44.3375	0.9125039999999984	20250420_130435UTC_V00OS11.WAV