"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   61.22871
        63,   56.21873
       125,   46.58246
       250,   38.84623
       500,    53.0433
      1000,   49.07011
      2000,   47.71512
      4000,   47.02304
      8000,    33.4767
     16000,   21.28672