"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.06669
        63,   52.23338
       125,   50.13698
       250,   47.76933
       500,   53.46191
      1000,   75.06787
      2000,   47.05093
      4000,    42.0256
      8000,   31.89095
     16000,   20.37675