"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,   2.807392
      31.5,   13.42589
        63,   25.82837
       125,   34.80611
       250,   35.90903
       500,   39.20904
      1000,   42.63356
      2000,   46.53939
      4000,   44.75008
      8000,   46.11901
     16000,   44.21522
