"Power Spectrum IEC 1/1-Oct Mag - dB volts "
      "Hz"      "Data"
        16,       -200
      31.5,  -46.62661
        63,  -47.20677
       125,  -53.06308
       250,  -59.27131
       500,  -42.06488
      1000,  -21.40384
      2000,  -45.71405
      4000,  -48.83595
      8000,  -54.41778
     16000,  -71.32788