"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   61.10343
        63,   57.56763
       125,   51.74209
       250,   39.95737
       500,   50.58219
      1000,   50.16843
      2000,   51.71638
      4000,   45.36621
      8000,   34.49828
     16000,   21.46645