"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.41857
        63,   54.87183
       125,   54.17212
       250,   50.35591
       500,   64.97054
      1000,   64.12453
      2000,   48.19057
      4000,   43.67246
      8000,    20.1014
     16000,   18.39409