"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   62.83939
        63,   58.35897
       125,   50.83332
       250,   43.83567
       500,   54.09641
      1000,    77.8563
      2000,   64.25788
      4000,   50.32304
      8000,   51.21874
     16000,   32.95047