"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.22465
        63,   52.42543
       125,   45.12644
       250,   50.49538
       500,   70.01051
      1000,   70.75751
      2000,   59.44303
      4000,   51.08133
      8000,   36.48261
     16000,   25.09772