"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   50.15752
        63,   49.16463
       125,    39.1691
       250,   37.00416
       500,   54.97913
      1000,   52.05973
      2000,   50.98526
      4000,     50.302
      8000,   35.42178
     16000,   21.79454