"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.69997
        63,   56.17052
       125,   52.05756
       250,   47.31378
       500,   55.30384
      1000,   78.65114
      2000,   55.52473
      4000,   43.18185
      8000,   35.59574
     16000,   24.39718