set style arrow 1 nohead lc 1
set style arrow 2 nohead lc 2
plot \
  "tucker.txt" using 1:3:($2 - $1):(0) with vectors arrowstyle 1, \
  "tucker.txt" using 1:3:(0):($4 - $3) with vectors arrowstyle 1, \
  "tucker.txt" using 2:4:($1 - $2):(0) with vectors arrowstyle 1, \
  "tucker.txt" using 2:4:(0):($3 - $4) with vectors arrowstyle 1, \
  "tucker.txt" using (-$1):(-$3):($1 - $2):(0) with vectors arrowstyle 1, \
  "tucker.txt" using (-$1):(-$3):(0):($3 - $4) with vectors arrowstyle 1, \
  "tucker.txt" using (-$2):(-$4):($2 - $1):(0) with vectors arrowstyle 1, \
  "tucker.txt" using (-$2):(-$4):(0):($4 - $3) with vectors arrowstyle 1, \
  "plot.csv" using 1:2:($4 - $1):(0) with vectors arrowstyle 2, \
  "plot.csv" using 1:2:(0):($5 - $2) with vectors arrowstyle 2, \
  "plot.csv" using 4:5:($1 - $4):(0) with vectors arrowstyle 2, \
  "plot.csv" using 4:5:(0):($2 - $5) with vectors arrowstyle 2

