"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   61.06647
        63,   60.90541
       125,   56.01269
       250,   47.72597
       500,   57.74289
      1000,   51.03405
      2000,   50.64149
      4000,   41.68335
      8000,   28.65051
     16000,   17.42461