"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   52.72923
        63,   52.87631
       125,     47.887
       250,     49.007
       500,   64.88088
      1000,   67.45983
      2000,   50.23012
      4000,   43.87928
      8000,   22.93555
     16000,   18.33532