"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   54.61496
        63,   55.07354
       125,      56.56
       250,   47.36834
       500,   58.20258
      1000,   55.72525
      2000,   52.54321
      4000,   44.86761
      8000,   28.78575
     16000,   20.51557