V1:ENV_EDB_MIC vs V1:ENV_CEB_MIC
      Hz,  Lout(dB), Lin(dB), Trev correction, ISOL(dB)
     0.8,    48.2,    40.3,     nan,     nan
     1.2,    43.3,    38.8,     nan,     nan
     1.4,    41.0,    39.6,     nan,     nan
     1.8,    36.5,    39.3,     nan,     nan
     2.2,    34.6,    40.4,     nan,     nan
     3.0,    32.2,    41.0,     nan,     nan
     3.8,    36.6,    41.4,     nan,     nan
     5.0,    36.1,    38.2,     nan,     nan
     6.2,    33.3,    32.7,     nan,     nan
     7.8,    35.4,    29.9,     nan,     nan
     9.8,    42.6,    33.0,    -0.0,     9.6
    12.4,    43.5,    43.0,     nan,     nan
    15.4,    42.7,    37.7,    -0.0,     4.9
    19.6,    40.3,    36.8,    -0.0,     3.5
    24.6,    41.6,    34.4,    -0.0,     7.2
    31.2,    45.8,    40.7,    -0.0,     5.2
    39.2,    49.3,    47.1,    -0.0,     2.3
    49.6,    57.9,    55.3,    -0.0,     2.6
    62.6,    59.5,    48.6,    -0.0,    10.9
    78.8,    60.3,    53.2,    -0.0,     7.1
    99.2,    61.2,    54.2,    -0.0,     7.0
   125.0,    65.9,    50.8,    -0.0,    15.1
   157.6,    67.3,    44.6,    -0.0,    22.7
   198.4,    68.8,    46.1,    -0.0,    22.7
   250.0,    68.3,    39.1,    -0.0,    29.2
   315.0,    69.8,    41.6,    -0.0,    28.2
   397.0,    69.5,    44.4,    -0.0,    25.1
   500.0,    71.8,    45.3,    -0.0,    26.4
   630.0,    71.8,    42.2,    -0.0,    29.6
   793.6,    68.6,    40.2,    -0.0,    28.4
   999.8,    70.7,    40.0,    -0.0,    30.7
  1259.8,    71.7,    39.2,    -0.0,    32.6
  1587.4,    70.2,    36.6,    -0.0,    33.5
  2000.0,    66.4,    28.3,    -0.0,    38.0
  2520.0,    54.9,    16.4,    -0.0,    38.5
  3174.8,    42.8,    11.8,    -0.0,    31.0
  4000.0,    38.2,     8.1,    -0.0,    30.1
  5039.6,    37.4,     8.2,     nan,     nan
  6349.6,    33.7,     8.5,     nan,     nan
  8000.0,    28.0,     2.2,    -0.0,    25.8