"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   59.18311
        63,   55.44804
       125,   47.50354
       250,   59.52318
       500,    70.8474
      1000,   69.99995
      2000,   53.65156
      4000,    47.9552
      8000,   30.72592
     16000,   18.59791