"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   67.45365
        63,   59.89245
       125,   51.49867
       250,   43.68892
       500,   55.12551
      1000,   68.88538
      2000,   52.29172
      4000,   38.20062
      8000,   23.85444
     16000,   19.03877