"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.02332
        63,    54.4331
       125,   51.91707
       250,   57.10668
       500,   71.30793
      1000,   68.74979
      2000,   56.60995
      4000,   44.85934
      8000,   35.34045
     16000,   21.26835