"IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,   6.402781
      31.5,   15.03058
        63,   27.16862
       125,   36.17559
       250,   38.64061
       500,   43.02309
      1000,   47.14994
      2000,   51.89887
      4000,    52.1183
      8000,   51.84797
     16000,   53.14987
