"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.81859
        63,   55.51681
       125,   55.39369
       250,   48.10624
       500,    64.4835
      1000,   61.64709
      2000,   48.84924
      4000,   40.29352
      8000,   20.97627
     16000,   17.22457