"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.37368
        63,   57.60728
       125,   50.43323
       250,   43.28113
       500,   56.56484
      1000,   62.47684
      2000,   50.26178
      4000,   43.20898
      8000,   30.96472
     16000,   22.42456