#
#  Yang & Tsai Data
#  Mean pressure 4mm slit V gutter
#
#  x= 20 mm
#
#  y (mm)   P
  30        -4
  28      -4.7
  26      -5.6
  24      -6.7
  22      -7.8
  20      -9.4
  18     -10.6
  16     -12.2
  14     -13.4
  12     -14.5
  10     -15.5
   8     -15.8
   6       -16
   4       -16
   2     -15.8
   0     -15.3
  -2     -15.1
  -4     -14.8
  -6     -14.8
  -8     -14.9
 -10     -15.2
 -12     -15.2
 -14     -14.5
 -16     -13.9
 -18     -13.3
 -20     -11.4
 -22       -10
 -24      -9.2
 -26      -8.1
 -28        -7
 -30      -6.4