"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   58.54485
        63,    55.3162
       125,   48.58973
       250,   38.11744
       500,   55.64752
      1000,   44.18771
      2000,   41.62288
      4000,   42.59427
      8000,    28.3373
     16000,   18.44131