"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.78918
        63,   60.24933
       125,   57.31067
       250,   62.14525
       500,   74.28083
      1000,   74.29074
      2000,   62.10992
      4000,   57.23856
      8000,   43.50404
     16000,   31.10034