!================================
!  La coordonee verticale L31 : (ECMWF ? ; sur le site BOMEX)
!================================
    data VAH/ &
      &   1000.0000000000, &
      &   2000.0000000000, &
      &   4000.0000000000, &
      &   6000.0000000000, &
      &   8000.0000000000, &
      &   9976.1353610000, &
      &  11820.5396170000, &
      &  13431.3939260000, &
      &  14736.3569090000, &
      &  15689.2074580000, &
      &  16266.6105000000, &
      &  16465.0057340000, &
      &  16297.6193320000, &
      &  15791.5986040000, &
      &  14985.2696300000, &
      &  13925.5178580000, &
      &  12665.2916620000, &
      &  11261.2288780000, &
      &   9771.4062900000, &
      &   8253.2120960000, &
      &   6761.3413260000, &
      &   5345.9142400000, &
      &   4050.7176780000, &
      &   2911.5693850000, &
      &   1954.8052960000, &
      &   1195.8897910000, &
      &    638.1489110000, &
      &    271.6265450000, &
      &     72.0635770000, &
      &      0.0000000000, &
      &      0.0000000000, &
      &      0.0000000000 /
    data VBH/ &
       &   0.0000000000, &
       &   0.0000000000, &
       &   0.0000000000, &
       &   0.0000000000, &
       &   0.0000000000, &
       &   0.0003908582, &
       &   0.0029197006, &
       &   0.0091941320, &
       &   0.0203191555, &
       &   0.0369748598, &
       &   0.0594876397, &
       &   0.0878949492, &
       &   0.1220035886, &
       &   0.1614415235, &
       &   0.2057032385, &
       &   0.2541886223, &
       &   0.3062353873, &
       &   0.3611450218, &
       &   0.4182022749, &
       &   0.4766881754, &
       &   0.5358865832, &
       &   0.5950842740, &
       &   0.6535645569, &
       &   0.7105944258, &
       &   0.7654052430, &
       &   0.8171669567, &
       &   0.8649558510, &
       &   0.9077158297, &
       &   0.9442132326, &
       &   0.9729851852, &
       &   0.9922814815, &
       &   1.0000000000 /
