"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   51.39591
        63,   53.71347
       125,   43.40616
       250,   48.96442
       500,   67.61105
      1000,   68.37468
      2000,   49.41457
      4000,   42.49077
      8000,   25.91301
     16000,   19.62769