"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.24891
        63,   52.84962
       125,    45.5735
       250,   42.39642
       500,   50.71933
      1000,   73.49799
      2000,   53.41058
      4000,   42.95271
      8000,   29.27781
     16000,   20.72916