"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   55.00578
        63,    53.0466
       125,   47.17078
       250,   42.24612
       500,   53.30804
      1000,   50.20638
      2000,   52.76092
      4000,   47.38873
      8000,   39.51482
     16000,   24.13535