"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.79601
        63,   59.06649
       125,   50.59021
       250,   40.74174
       500,   54.90073
      1000,   49.66936
      2000,   50.57303
      4000,   43.96386
      8000,   34.05994
     16000,   19.83084