NEVC   Thick
  yr     (cm)
    1   27.72
    2   13.84
    3   10.78
    4   15.96
    5   53.20
    6   66.00
    7   14.05
    8   22.03
    9   40.80
   10   23.79
   11   17.47
   12   14.67
   13   40.80
   14   15.55
   15    8.56
   16   22.04
   17   21.57
   18    9.70
   19   13.48