"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   64.20151
        63,   64.53017
       125,   68.38336
       250,    70.4379
       500,    65.4947
      1000,   63.27414
      2000,   61.60415
      4000,   53.45654
      8000,   45.47718
     16000,   36.40229