#
#  Yang & Tsai Data
#  Mean pressure 4mm slit V gutter
#
#  x= 70 mm
#
#  y (mm)   P
  30       -0.2
  28       -0.3
  26       -0.6
  24         -1
  22       -1.4
  20       -1.5
  18       -1.8
  16         -2
  14       -2.1
  12       -2.5
  10       -2.6
   8       -2.7
   6       -2.8
   4       -2.9
   2         -3
   0         -3
  -2       -3.3
  -4       -3.6
  -6       -3.8
  -8       -3.9
 -10       -3.9
 -12       -3.9
 -14       -3.7
 -16       -3.3
 -18       -2.7
 -20       -1.9
 -22       -1.3
 -24         -1
 -26       -0.3
 -28       -0.1
 -30        0.1