"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.31839
        63,   56.05219
       125,   50.15634
       250,   55.69789
       500,   68.86196
      1000,   75.73054
      2000,   58.84541
      4000,   47.43346
      8000,   35.44183
     16000,   21.59756