"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.69168
        63,   55.48327
       125,   47.65704
       250,   40.36611
       500,   50.86481
      1000,   45.45056
      2000,    49.7421
      4000,   44.71856
      8000,   36.55351
     16000,   21.95221