"Power Spectrum IEC 1/1-Oct Mag - dB volts "
      "Hz"      "Data"
        16,       -200
      31.5,  -45.30625
        63,  -45.92018
       125,  -46.54204
       250,  -54.54677
       500,  -41.81269
      1000,  -29.16652
      2000,  -48.70027
      4000,  -48.16038
      8000,  -60.92862
     16000,   -75.3333