"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.28812
        63,   54.07327
       125,   42.94546
       250,   50.90461
       500,   68.13492
      1000,   70.34254
      2000,   50.18914
      4000,    48.4535
      8000,   28.82095
     16000,   23.90076