"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   65.57144
        63,   60.69962
       125,   53.97026
       250,   48.61752
       500,   50.98465
      1000,   50.24575
      2000,   45.52704
      4000,   41.13264
      8000,   31.06138
     16000,    21.8898