"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   61.28217
        63,   62.67746
       125,   56.39618
       250,   48.32597
       500,   51.80629
      1000,   49.98985
      2000,   47.30428
      4000,   45.87621
      8000,   32.32944
     16000,   18.71268