"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   50.17969
        63,   49.18272
       125,   47.25095
       250,   47.16541
       500,   64.10638
      1000,   66.69816
      2000,   50.57983
      4000,   39.24159
      8000,   23.34799
     16000,   20.01524