"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   57.53646
        63,   57.61707
       125,   49.00914
       250,   40.09543
       500,   55.65129
      1000,   58.39353
      2000,   55.20761
      4000,   53.56887
      8000,   35.56421
     16000,   24.71539