"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   56.28152
        63,   57.41079
       125,   50.28891
       250,   44.34329
       500,   54.51945
      1000,   46.06692
      2000,   43.41844
      4000,   38.61734
      8000,   24.60868
     16000,   17.80534