"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.00749
        63,   48.95607
       125,   41.93283
       250,   50.00809
       500,   67.60395
      1000,   68.03519
      2000,   55.55051
      4000,   50.21126
      8000,   27.44983
     16000,   23.17233