"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.66695
        63,   55.79349
       125,   54.40317
       250,   48.41789
       500,   52.12026
      1000,   80.86455
      2000,   56.98632
      4000,   46.50511
      8000,   36.78072
     16000,   28.18909