"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.31498
        63,   57.58382
       125,    53.4446
       250,   54.39814
       500,   69.84074
      1000,   69.70431
      2000,   58.62307
      4000,   51.22448
      8000,   37.07564
     16000,   23.00813