"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.56395
        63,   51.16361
       125,   48.85777
       250,   44.74371
       500,   54.74316
      1000,   50.78748
      2000,   46.14384
      4000,   40.34245
      8000,   30.65455
     16000,   21.20092