"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.89882
        63,    55.3099
       125,   46.23522
       250,   42.53374
       500,   52.08054
      1000,   49.65473
      2000,   47.12553
      4000,   40.69405
      8000,   28.41441
     16000,   18.83885