"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,    55.9199
        63,   57.61936
       125,    50.1378
       250,   58.96985
       500,   74.69188
      1000,   75.58325
      2000,   59.45106
      4000,   51.52279
      8000,   41.77602
     16000,   29.10726