"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   57.86617
        63,   61.22702
       125,   61.53439
       250,   52.28521
       500,   54.92827
      1000,   79.29237
      2000,   58.04255
      4000,   47.59161
      8000,   45.77475
     16000,   28.30392