"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.28969
        63,   50.14347
       125,   41.48762
       250,   49.08046
       500,   65.50808
      1000,   68.51049
      2000,   55.36064
      4000,   47.55416
      8000,    32.3742
     16000,   23.39835