"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   51.01544
        63,   50.69183
       125,   44.15419
       250,   49.79671
       500,   69.76652
      1000,   68.15076
      2000,   56.07727
      4000,   47.64788
      8000,   38.03707
     16000,   26.40275