"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   57.44644
        63,    51.5373
       125,   43.77017
       250,   38.07968
       500,   53.66146
      1000,   52.06908
      2000,   55.44085
      4000,   47.84109
      8000,   28.82362
     16000,   23.03454