"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.74626
        63,   57.78502
       125,   50.15018
       250,   58.66404
       500,   71.94472
      1000,   75.24705
      2000,   55.56699
      4000,   48.67988
      8000,   34.01482
     16000,   24.69598