"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.16599
        63,   50.36689
       125,   42.92456
       250,   36.89207
       500,   56.27033
      1000,   45.06409
      2000,   44.39758
      4000,   46.47671
      8000,   29.54623
     16000,   19.73849