"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   53.88205
        63,   55.41349
       125,   49.53269
       250,   49.57018
       500,   65.12721
      1000,   67.25581
      2000,   50.37107
      4000,   34.44868
      8000,   19.70712
     16000,   17.41813