"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.82434
        63,    54.9015
       125,   51.90964
       250,   49.36553
       500,   68.39566
      1000,   69.22336
      2000,   54.83891
      4000,   48.40903
      8000,   26.21342
     16000,   21.39659