"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.84159
        63,   50.38151
       125,   50.46072
       250,   48.03259
       500,   64.22367
      1000,   65.70245
      2000,   47.48245
      4000,   35.26391
      8000,   17.85089
     16000,   16.55521