"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.58142
        63,   55.54243
       125,   65.85994
       250,   57.64017
       500,   70.33897
      1000,   68.48867
      2000,   49.37644
      4000,   46.75557
      8000,   29.98713
     16000,   18.82922