"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.79641
        63,   53.82803
       125,   45.85628
       250,   42.65838
       500,   54.16946
      1000,   52.03677
      2000,   50.63619
      4000,   50.96133
      8000,   37.59435
     16000,   26.32203