"Power Spectrum IEC 1/1-Oct Mag - dB volts "
      "Hz"      "Data"
        16,       -200
      31.5,  -41.30106
        63,  -45.46307
       125,  -56.27617
       250,  -60.90689
       500,  -38.21646
      1000,  -23.60791
      2000,  -43.55971
      4000,  -60.15547
      8000,  -66.18021
     16000,  -70.27599