"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.34228
        63,   54.17476
       125,   49.71441
       250,   50.55719
       500,   59.80339
      1000,     69.919
      2000,   53.83814
      4000,   47.75113
      8000,   30.92097
     16000,   21.45116