"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.99137
        63,   51.46081
       125,   47.09958
       250,   46.83323
       500,   66.86822
      1000,   66.67566
      2000,   49.25341
      4000,   43.10229
      8000,   22.39645
     16000,   19.24355