"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,    59.9039
        63,   68.23869
       125,   53.53796
       250,   55.66127
       500,   70.31261
      1000,   70.74036
      2000,   58.53841
      4000,    48.5252
      8000,   33.61554
     16000,   25.30281