"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,    65.3344
        63,   61.41129
       125,   48.36395
       250,   49.01305
       500,   53.49696
      1000,   53.28537
      2000,   50.80421
      4000,   47.94927
      8000,   36.59229
     16000,   22.14462