"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   57.42479
        63,   54.75891
       125,   47.12575
       250,    45.3304
       500,   56.10402
      1000,   54.54914
      2000,    52.2496
      4000,   44.69876
      8000,   33.32971
     16000,   25.40988