"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.46755
        63,   50.80333
       125,   42.58307
       250,   56.64747
       500,   71.65012
      1000,    69.5172
      2000,   57.68432
      4000,   51.34623
      8000,   30.77235
     16000,    20.3658