"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.47706
        63,     57.952
       125,   48.32312
       250,   43.85677
       500,   52.74035
      1000,   46.02591
      2000,   48.26319
      4000,   50.64268
      8000,   32.25991
     16000,   22.22509