"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,   1.329662
      31.5,   12.18501
        63,    24.7085
       125,   33.88451
       250,   33.93657
       500,   34.51568
      1000,   37.30917
      2000,   39.05413
      4000,   33.86838
      8000,   34.33833
     16000,   33.56273
