"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   60.67843
        63,   58.67027
       125,    47.8801
       250,   42.44874
       500,   54.51364
      1000,   60.03362
      2000,   51.82858
      4000,   49.56383
      8000,   34.88881
     16000,   23.57979