"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   57.48339
        63,   58.05098
       125,   49.83696
       250,   44.39679
       500,     54.952
      1000,   66.27024
      2000,   44.51191
      4000,   32.62792
      8000,    22.8345
     16000,   18.00198