"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   52.26719
        63,   52.36654
       125,   48.30847
       250,   56.99858
       500,    70.6417
      1000,    68.8306
      2000,   54.78984
      4000,    48.5984
      8000,    32.8765
     16000,   20.81639