"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   56.10545
        63,    63.7435
       125,   51.94466
       250,   50.91973
       500,    68.5959
      1000,    67.0631
      2000,   52.21476
      4000,   47.65582
      8000,   28.53479
     16000,    21.9397