"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.66678
        63,   52.48819
       125,   44.99658
       250,   34.60082
       500,   52.96794
      1000,    42.1791
      2000,   43.33295
      4000,   44.86039
      8000,   28.59817
     16000,     22.797