"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.63373
        63,   61.15775
       125,   47.27345
       250,   42.04121
       500,   57.10741
      1000,   68.59171
      2000,   49.56137
      4000,   35.77558
      8000,   23.46928
     16000,    18.3723